Vanilon
凡尼龙
🗣️ 情景例句
Didn't we go to school together?
我们以前在一起上过学吗？
Time past cannot be called back again.
光阴一去不复返。
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。