Spumescent
a. 起泡沫的, 泡沫状的
🗣️ 情景例句
Is smoking allowed on the train?
火车上允许吸烟吗？
Tomorrow is another day.
明天有明天的事。
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。