期限 → ☊ 
time limit; deadline; allotted time ☊ 
khoảng thời gian 
interval like: Khoảng thời gian → →
In der Zeit vom 23.12. bis zum 10.01. bin ich leider nicht erreichbar. ☊ 
Trong khoảng thời gian từ 23.12 đến 10. 01 tôi sẽ không thể liên lạc được. ☊ (Lektion 92, Nr. 1388) an amount of time/money/information ☊ amount ☊
Small children have a very short attention span. ☊ attention ☊
I will confine myself to looking at the period from 1900 to 1916. ☊ confine ☊
a contract worker (= one employed on a contract for a fixed period of time) ☊ contract ☊
The difficulty of a problem was defined in terms of how long it took to complete. ☊ define ☊
This is a very emotional time for me. ☊ emotional ☊
an enormous amount of time ☊ enormous ☊
a rock festival (= where bands perform, often outdoors and over a period of several days) ☊ festival ☊
The money has been invested for a fixed period. ☊ fixed ☊
The weather was warm for the time of year. ☊ for ☊
The forecast said there would be sunny intervals and showers. ☊ forecast ☊
a hate campaign (= cruel comments made about sb over a period of time in order to damage their reputation) ☊ hate ☊
He knocked on the door and after a brief interval it was opened. ☊ interval ☊
She's delirious, but has lucid intervals. ☊ interval ☊
He was disgusted at the length of time he had to wait. ☊ length ☊
She got a headache if she had to read for any length of time (= for a long time). ☊ length ☊
This offer is for a limited period only. ☊ limited ☊
He stared at them for the longest time (= for a very long time) before answering. ☊ long ☊
It wasn't long before she had persuaded him (= it only took a short time). ☊ long ☊
Moments later (= a very short time later), I heard a terrible crash. ☊ moment ☊
Did you have a nice time? ☊ nice ☊
The patients were observed over a period of several months. ☊ observe ☊
a window of opportunity (= a period of time when the circumstances are right for doing sth) ☊ opportunity ☊
He built up the business over a period of ten years. ☊ over ☊
There was a long pause before she answered. ☊ pause ☊
After a brief pause, they continued climbing. ☊ pause ☊
You can pay back the loan over a period of three years. ☊ pay sb back (sth), pay sth back (to sb) ☊
The factory will be closed down over a 2-year period/a period of two years. ☊ period ☊
This offer is available for a limited period only. ☊ period ☊
All these changes happened over a period of time. ☊ period ☊
You can have it for a trial period (= in order to test it). ☊ period ☊
Like Picasso, she too had a blue period. ☊ period ☊
it is proposed that...: It was proposed that the president be elected for a period of two years. ☊ propose ☊
prove what, how, etc...: This just proves what I have been saying for some time. ☊ prove ☊
A light flashed at regular intervals. ☊ regular ☊
It was all over in a relatively short space of time. ☊ short ☊
Jane's worked here for some time (= for a fairly long period of time). ☊ time ☊
It's been a worrying time for us all. ☊ worrying ☊