like: một ngày → →
day by day, day after day ☊ 
ngày một ngày hai ☊ after a hard day’s work ☊ sau một ngày lao động vất vả ☊ there will come a day, someday ☊ sẽ có một ngày nào đó ☊ one more day ☊ thêm một ngày nữa ☊ (a day) not long from now ☊ trong một ngày không xa ☊ at an early date ☊ vào một ngày gần đây ☊ 
Aber dieses Mal zwang Trang ihn, mit ihr mitzukommen, wenigstens für einen Tag. ☊ Nhưng lần này Trang buộc anh phải đi cùng cô, ít nhất một ngày. ☊ (Lektion 17, Nr. 181) Es ist ein sehr regnerischer und stürmischer Tag. Trang schaut aus dem Fenster heraus. ☊ Đó là một ngày mưa bão. Trang nhìn ra cửa số. ☊ (Lektion 38, Nr. 537) Das war der schönste Tag meines Lebens! ☊ Quả là một ngày đẹp nhất trong đời em! ☊ (Lektion 79, Nr. 1129) Könnten Sie mir bitte beschreiben, wie ein typischer Arbeitstag bei Ihnen aussieht? ☊ Ông / Bà có thể cho tôi biết, một ngày làm việc điển hình ở đây thế nào? ☊ (Lektion 108, Nr. 1963) Ich muss einen Tag länger hierbleiben. ☊ Tôi phải ở lại đây thêm một ngày nữa. ☊ (Lektion 123, Nr. 2396) Let's meet the day after tomorrow/the week after next. ☊ after ☊
agree on sth: Can we agree on a date? ☊ agree ☊
I'm having a really bad day. ☊ bad ☊
the day before yesterday ☊ before ☊
Have you had a busy day ? ☊ busy ☊
We had a busy weekend lined up. ☊ busy ☊
a calm, cloudless day ☊ calm ☊
a birthday/get-well/good luck card ☊ card ☊
On a clear day you can see France. ☊ clear ☊
I had a long conversation with her the other day. ☊ conversation ☊
We spent a pleasant day in the country. ☊ country ☊
A systems crash in the morning and a bomb scare in the afternoon provided enough excitement for one day. ☊ crash ☊
Paul's not coming. He's got a hot date (= an exciting one). ☊ date ☊
The details can be added at a later date. ☊ date ☊
The work will be carried out at a future date. ☊ date ☊
We need to fix a date for the next meeting. ☊ date ☊
Take the medicine three times a day. ☊ day ☊
We can't go there today. You can go another day. ☊ day ☊
a seven-hour working day ☊ day ☊
It's been a long day (= I've been very busy). ☊ day ☊
Did you have a good day? ☊ day ☊
Have a nice day! ☊ day ☊
One day, I want to leave the city and move to the country. ☊ one day ☊
a day of strong winds and driving rain ☊ driving ☊
It was a dull, grey day. ☊ dull ☊
After just one day, she had already made an enemy of her manager. ☊ enemy ☊
an enjoyable weekend/experience ☊ enjoyable ☊
The sender of the first correct entry drawn will win a weekend for two in Venice. ☊ entry ☊
He has every third day off (= he works for two days then has one day off then works for two days and so on). ☊ every ☊
It was a warm day, if not exactly hot. ☊ exactly ☊
a fair and breezy day ☊ fair ☊
I had to run away for fear (that) he might one day kill me. ☊ for fear of sth/of doing sth, for fear (that)... ☊
a fine day/evening ☊ fine ☊
We enjoyed a day's fishing by the river. ☊ fishing ☊
The starting point for emancipation was the freeing of children of slaves born after a certain date. ☊ free ☊
at a future date ☊ future ☊
I always start the day by going through my email. ☊ go through sth ☊
I've had a long hard day. ☊ hard ☊
Hardly a day goes by without my thinking of her (= I think of her almost every day). ☊ hardly ☊
She'll have an accident one day. ☊ have ☊
She'd had a heavy day. ☊ heavy ☊
It was a lovely day so I walked home. ☊ home ☊
invitation to do sth: I have an open invitation (= not restricted to a particular date) to visit my friend in Japan. ☊ invitation ☊
It was just an ordinary day. ☊ just ☊
The match has been postponed to a later date. ☊ later ☊
We spent a lazy day on the beach. ☊ lazy ☊
We all needed a little light relief at the end of a long day (= something amusing or entertaining that comes after sth serious or boring). ☊ light ☊
I've limited myself to 1 000 calories a day to try and lose weight. ☊ limit ☊
I'm tired. It's been a long day. ☊ long ☊
Isn't it a lovely day? ☊ lovely ☊
We did about 30 miles a day on our cycling trip. ☊ mile ☊
a new day ☊ new ☊
a nice day/smile/place ☊ nice ☊
One day (= at some time in the future) you'll understand. ☊ one ☊
an ordinary sort of day ☊ ordinary ☊
I saw Jack the other day. ☊ the other day/morning/evening/week ☊
a birthday/dinner/garden, etc. party ☊ party ☊
It was a perfect day for a picnic. ☊ perfect ☊
It is not beyond the bounds of possibility that we'll all meet again one day. ☊ possibility ☊
In principle there is nothing that a human can do that a machine might not be able to do one day. ☊ in principle ☊
It was a proud day in the nation's history ☊ proud ☊
He'll be famous one day. What do you reckon (= do you agree)? ☊ reckon ☊
I can't remember his taking a single day off work. ☊ remember ☊
Try to get some rest—you have a busy day tomorrow. ☊ rest ☊
There are no matches tomorrow, which is a rest day, but the tournament resumes on Monday. ☊ rest ☊
It will be a sad day for all of us if the theatre is forced to close. ☊ sad ☊
On a clear day you can see for miles from here. ☊ see ☊
I've done my share of worrying for one day! ☊ share ☊
She was exhausted after a day's shooting. ☊ shooting ☊
'Thank you very much.' 'You're welcome, sir. Have a nice day.' ☊ sir ☊
How many cigarettes do you smoke a day? ☊ smoke ☊
Do you start the day with a good breakfast? ☊ start ☊
an unofficial/a one-day strike ☊ strike ☊
It's such a beautiful day! ☊ such ☊
a summer's day ☊ summer ☊
Not surprisingly on such a hot day, the beach was crowded. ☊ surprisingly ☊
a target date of April 2012 ☊ target ☊
We went on to Paris and stayed there eleven days. ☊ there ☊
Can I get there and back in a day? ☊ there ☊
It had been a long tiring day. ☊ tiring ☊
I'll see you the day after tomorrow. ☊ tomorrow ☊
A typical working day for me begins at 7.30. ☊ typical ☊
On a typical day, we receive about 50 letters. ☊ typical ☊
It's been quite a day, one way and another (= for several reasons). ☊ way ☊
Have a good weekend! ☊ weekend ☊
a wet day ☊ wet ☊
With all the lesson preparation I have to do I work 12 hours a day. ☊ with ☊
write sth about/on sth: He hopes to write a book about his experiences one day. ☊ write ☊
'I'm going to be rich one day.' 'Oh yeah?' (= I don't believe you.) ☊ oh yeah? ☊