Dioxacarb
[机] 二氧威
🗣️ 情景例句
This weekend I'm going to install a home security system.
这个周末我要装一套家庭保安系统。
How about Mary? How long has she lived there?
玛丽怎么样？她在那儿住多久了？
It is not so easy as you think.
这事没有你想象的那么简单。