Optional stop
[计] 选择停机, 条件停机, 随意停机
🧩 词语组成解析
stop
[stɑp]
vi. 停止;中断;逗留;（使）停止工作;
vt. 塞住;堵塞;阻挠;止付;
n. 停止;（管风琴的）音栓;停车站;（管风琴的）音管;
🗣️ 情景例句
Harry Bennett. Is this Susan?
Harry Bennett，是Susan吗？
Between two stools one goes the ground.
脚踩两只船，早晚要落水。
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。