Off-scourings
(off-scouring 的复数) n. 垃圾；废物
🧩 词语组成解析
off
[ɔ:f, ɔf]
prep. 从…落下;离开;从…去掉;下班;
adv. 离开;距，离;被取消;下班;
adj. 不新鲜的;不能接受;不礼貌;
n. 起跑;
v. 杀死;
n. 擦洗下的污垢, 社会渣滓
🗣️ 情景例句
That's not true.
那不是真的。
I'm afraid you will catch a cold.
我怕你会感染到感冒。
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。