Jcr
abbr.Junior Common (或Combination)Room <英>(大學)學生公用室
??? 情景例句
Is something bothering you?
有什么事煩你嗎？
I wouldn't worry about it, if I were you.
我是你的話，我不會擔心的。
and by measuring the time interval between the taps and the receipt of the echoes, the depth of the sea at that point can be calculated.
測出回聲間隔的時間，便可算出該處海洋的深度。