Psd
[计] 组合交换数据, 程序系统说明
🗣️ 情景例句
I'm very sorry.
非常抱歉。
I think you probably know China has adopted a flexible policy in her foreign trade.
我想你也许已经了解到中国在对外贸易中采取了灵活的政策。
You forget that I was a medical student once upon a time.'
你忘了我以前是学医的了。”