🧩 词语组成解析
a. 产科的, 助产的
🗣️ 情景例句
Is that tall or average or what?
这样尺寸是高呢， 还是普通， 或者算怎样？
That's a pity.
那真可惜。
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。