Off-scourings
(off-scouring 的復(fù)數(shù)) n. 垃圾；廢物
?? 詞語組成解析
off
[?:f, ?f]
prep. 從…落下;離開;從…去掉;下班;
adv. 離開;距，離;被取消;下班;
adj. 不新鮮的;不能接受;不禮貌;
n. 起跑;
v. 殺死;
n. 擦洗下的污垢, 社會渣滓
??? 情景例句
That's not true.
那不是真的。
I'm afraid you will catch a cold.
我怕你會感染到感冒。
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.
測出回聲間隔的時間，便可算出該處海洋的深度。