日間的英文：
in the daytime; during the day; by day/night
n. 白天，日间
He slept badly at night and couldn't concentrate in class at daytime
他夜里睡不好,白天上课时思想开小差。
Bats sleep in the daytime and come out to hunt for food at night.
Daytime television tended to remind her too forcefully of her own situation.
日间电视节目往往使她深刻地认识到自身的境况。
prep. 在…整个期间；在…期间的某个时候
during one's minority
未成年期间
Drinking is not advised during pregnancy.
建议妊娠期不要饮酒。
The capture was conducted during midnight.
俘虏行动在午夜举行。
n. 一天；白昼，白天；工作日；时代，时期
Things go on day by day.
事情逐日进行着。
Day by day the situation is improving.
情况在一天天地好转。
Like this, day after day.
就这样，日复一日。