A3
n. A3号纸（尺寸为420×297mm的）
🗣️ 情景例句
Thanks for everything, if you ever need a favor in return, just let me know.
感谢你所做的一切，如果你需要我帮忙的话，尽管开口吧。
I couldn't get through.
我打不通电话。
Now she looks pale as if she were ill.
现在她脸色难看，好像病了一样。