Actified solution
[机] 再生溶液
🧩 词语组成解析
🗣️ 情景例句
What do you do for a living?
你是做什么的？
It was eleven o'clock when he finally showed up.
他最后露面时，已经11点钟了。
Opportunity knocks but once.
机不可失，时不再来。