Polycopria
多粪(症)
🗣️ 情景例句
Hot dogs and mustard.
热狗和芥末。
Don't worry about it.
别管他！
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。