Oscillopsia
[医] 振动幻视
🗣️ 情景例句
It's Alexandra.
是Alexandra。
Cheer up!
高兴起来!振作起来!
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。