Halogenating agent
[化] 卤化剂
🧩 词语组成解析
🗣️ 情景例句
If you really mean it,
假如你是说真的，
Time past cannot be called back again.
光阴一去不复返。
He added that a student had dressed up as a policeman and was playing all sorts of silly jokes on people.
还对工人说，有个学生常装扮成警察无聊地同别人开玩笑。