A3
n. A3号纸（尺寸为420×297mm的）
🗣️ 情景例句
A piece of chewing gum stuck to my shoe.
一片口香糖粘在我的鞋上。
I asked him to lend me a book , but he wouldn't.
我请他把书借给我，但是他不肯。
I don't know.I've already had my holiday this year.
我不知道。今年我已度过假了。