Multitrack
[计] 多道
🗣️ 情景例句
Oh?
噢？
I never expected him to be so great.
我没有想到他会是那么了不起。
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。