Recordak
n. 文件微缩复制系统
🗣️ 情景例句
This sentence doesn't make any sense.
这个句子完全讲不通。
She contributed a lot of good ideas to the discussion.
她在这次讨论中提出很多好的意见。
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。