A3
n. A3号纸（尺寸为420×297mm的）
🗣️ 情景例句
Thank you, Grandpa.
谢谢你， 爷爷。
Quick at meal, quick at work.
吃得快，做得快。
How much did you pay for all these things? asked her mother.
“买所有这些东西你付了多少钱？”她妈妈问。