Rackarock
氯酸钾-硝基苯炸药
🗣️ 情景例句
I am in the 7th grade.
我是七年级。
But after one week and I still hadn't made a single sale, my heart was in my boots.
但过了一星期还没有做成一笔生意，我感到十分焦急。
You are just in time.
你来得正是时候。