The depth of the sea at that point can be calculated by measuring the time interval between the taps and the return of the echoes.
通过测量敲打和回声之间的时间间隔可以计算出该处海洋的深度。
The depth of the sea at that point can be calculated by measuring the time interval between the taps and the return of the echoes.
通过测量敲打和回声之间的时间间隔可以计算出该处海洋的深度。
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