Unknown quantity
[化] 未知量
🧩 词语组成解析
🗣️ 情景例句
What works?
什么有效！
There are as good fish in the sea as ever came out of it.
海里的好鱼是取之不尽的。
You must cut off one pound of flesh, no more, no less. And not one drop of blood must fall.
你必须割下整一磅肉，不准多也不准少。而且不准流一滴血。