Activating acceleator
[化] 助促进剂
🧩 词语组成解析
[计] 启动
🗣️ 情景例句
Well, I've got to run, Dad.
嗯， 我得赶紧走了， 爸爸。
He that converses not knows nothing.
不和人交谈的人一无所知。
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。