Ectale
肢外片
🗣️ 情景例句
Something simple--but a good one.
要简单的，但要精美 。
I want to be a pilot of possible.
如果可能的话，我想做个飞行员。
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。