1. The thief broke into the house during the night.
   小偷在夜間破門進(jìn)入住宅。
2. He swims every day during the summer.
   他夏天每天游泳。

dur.ing

prep.（介詞）
Throughout the course or duration of:
在…期間：
例句：
suffered food shortages during the war.
在戰(zhàn)爭(zhēng)期間受食品短缺之苦

At some time in:
在…某個(gè)時(shí)候：
例句：
was born during a blizzard.
生于暴風(fēng)雪降臨的時(shí)候

來(lái)源：
Middle English [from present participle of] duren [to last]
中古英語(yǔ) [] 源自duren的現(xiàn)在分詞 [持續(xù)]
from Old French durer
源自 古法語(yǔ) durer
from Latin dôr3re * see deu…-
源自 拉丁語(yǔ) dôr3re *參見(jiàn) deu…-