ngày kỳ kỳ hạn thời kỳ thời đại đề ngày tháng 
date like: thời kỳ → →
during this time, period ☊ 
dưới thời kỳ này ☊ compared with last year ☊ so với cùng thời kỳ năm ngoái ☊ in the coming period ☊ trong thời kỳ mở cửa ☊ in, during this time, period ☊ vào thời kỳ này ☊ at that time ☊ vào thời kỳ đó ☊ 
die Phase ☊ giai đoạn, thời kỳ ☊ 
☊ 15 is an awkward age. ☊ age ☊
the artistic works of the period ☊ artistic ☊
The economy is in recession. ☊ economy ☊
It was his finest hour (= most successful period) as manager of the England team. ☊ fine ☊
A period of unrest followed the president's resignation. ☊ follow ☊
the male menopause (= emotional and physical problems that affect some men at about the age of 50) ☊ male ☊
Many jobs in manufacturing were lost during the recession. ☊ manufacturing ☊
The painting is not representative of his work of the period. ☊ representative ☊
survive from sth: Some strange customs have survived from earlier times. ☊ survive ☊
the violent times we live in (= the present period of history) ☊ time ☊