Critical piece
[化] 关键性部件
🧩 词语组成解析
piece
[pi:s]
n. 块，片，段;部分，部件;文章，音乐作品;
vt. 修补;连接，接上;
🗣️ 情景例句
That's right.
是的。
What is learnt in the cradle lasts (or is carried) to the grave.
小时学会的事情到老不会忘记。
As usual, the police will have a difficult time.
同往常一样，警察的日子将不好过，