Sionox
二氧化硅
🗣️ 情景例句
I never slept.
我总睡不着。
How about on Tuesday afternoon of next week? Is that okay with everyone?
下星期二下午怎样？各位没有意见吧？
You'll find the museum on the left.
你便可看见在左手边的博物馆了。