Settle a debt
[经] 结清债券
🧩 词语组成解析
🗣️ 情景例句
Can you help me?
你能帮帮我吗？
The first step is as good as half over.
第一步的成功等于事情的一半已完成。
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。