Prepyramidal sulci
[医] 椎体前沟
🧩 词语组成解析
[医] 锥体前的
[医] 沟
🗣️ 情景例句
A community center
一个社区中心
A full belly counsels well.
衣食足而后知荣辱。
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。