A4
n. A4型纸（规格为297×210毫米的纸）
🗣️ 情景例句
Its' time we talked about the new client base, when do you have time?
我看是时候谈谈这个新客户的情况了，你什么时候有空？
May I ask you a question?
我可以向您提个问题吗？
His vanity was hurt by their talking so frankly.
他们坦率的谈话伤害了他的虚荣心。