Nbs
[计] 国家标准局
🗣️ 情景例句
Hi. I'd like to cash an American Express traveler's check.
嗨，我想兑换美国运通的旅行支票。
I didn't know whether to send the letter airmail or not.
我不知道是否送航空邮件。
An old woman is standing at the side of the road.
一位老大娘站在靠近红绿灯的路边。