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. - 零障碍英汉语 - 方便、易学的英汉双语学习平台

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.

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测出回声间隔的时间，便可算出该处海洋的深度。

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