Cyclomycin
(=tetracycline)四环素
🗣️ 情景例句
I hate this.
我讨厌这个
Self-trust is the first secret of success.
自信是成功的首要秘诀。
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。