Catalyst activity
[化] 催化剂活性
🧩 词语组成解析
🗣️ 情景例句
Who do you work for?
你是做什么工作的？
Cindy's sister will be staying with her for a week.
辛迪的姐姐将要陪她一个星期。
People who live in Britain needn't despair when they made mistakes like this (and a lot of people do)!
当英国人犯这种错误时，他们不必感到绝望（而许多国家的人都有这种绝望的感觉）。