Prep.
abbr. (=preposition)(=preparation)\\n
🗣️ 情景例句
He's a good father.
他是个好父亲。
If you concentrate all your energies on the study of English, you will master the language.
你若全力以赴地学习英语，你会掌握这门语言的。
Do you see that notice? It says No Camping -- in case you can't read!'
你们看到那个布告牌了吗？上面写着‘禁止野营’－－除非你们不识字！”