Chemical operations
化学战
🧩 词语组成解析
n. 运作；运营；业务操作（operation的复数）
🗣️ 情景例句
It was nice meeting you all.
很高兴见到你们一家人。
Hide one's talents in a napkin.
埋没自己的才能。
At night, when you really wish to go to sleep, you rarely manage to do so.
到了夜晚，你真想睡了，却很难入睡。