Knacks
(knack 的复数) n. 熟练技术, 巧妙手法, 诀窍\\n[化] 窍门
🗣️ 情景例句
That was not the case.
事实并非如此。
Pay somebody back in his own coin.
一报还一报。
Yes. B-double O-K, book.
好的。B-双写O-K，book（书）。