Ctx
abbr. 环磷酰胺（cyclophosphamide）；用户电话交换机（Customer Telephone Exchange）
🗣️ 情景例句
There are several tours of the Grand Canyon.
到大峡谷有好几个旅游团。
Please be serious for a minute, this is very important.
请严肃点，这件事很重要。
I'm afraid he's out. He won't be back until tomorrow.
对不起，他外出去了，明天才回来。