Hapchance
n. 偶然事件(或情况)
🗣️ 情景例句
They're going to love it.
他们会喜欢的。
Why did't you tell me?
为什么你不告诉我？
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。