Tetrelide
[化] 第四族元素化物
🗣️ 情景例句
We've got a movie.
我们知道是一部电影。
How much does packing take up of the total cost of the goods?
包装占货物总成本的百分比是多少？
It was just one of those days!
这就是事事不顺心的那么一天！