Anklebones
n. 踝骨
🗣️ 情景例句
He had an emergency.
他有紧急事情。
Who are ready to believe are easy to deceive.
轻信的人容易受骗。
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。