during
/ˈdjʊərɪŋ/preposition
1- throughout the course or duration of (a period of time)在…期间：
the restaurant is open during the day.
那家餐厅白天营业。
1.1
- used to indicate constant development throughout a period在…的不断发展期间：
the period during which he grew to adulthood.
他长大成人的那段时间。
1.2
- at a particular point in the course of在…期间的某一时候：
the stabbing took place during a row at a party.
这起持刀刺人事件发生在聚会的一场争吵期间。
词源
late Middle English: present participle of the obsolete verb dure 'last, endure, extend', via Old French from Latin durare 'to last' （see DURATION）.