Needle-point
针尖
🧩 词语组成解析
needle
['nidl]
n. 针;针状物;<口>刺激性言行;
vt. 用针缝，刺;刺激，激怒;<俚>增加（饮料的）酒精含量;
vi. 缝纫;
🗣️ 情景例句
I'll take care of everything.
我会好好照料一切。
I'll be right with you.
我马上就来。
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。