🗣️ 情景例句
Remember to lock your door and windows when you leave the house.
出门前记得锁好门窗。
Deeds are fruits,words are but leaves.
行动是果实，言语只是叶子。
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.
测出回声间隔的时间，便可算出该处海洋的深度。