Halvic
一种聚氯乙烯
🗣️ 情景例句
That's load off my mind.
这一来我心里轻松了。
Competition between bidders for this valuable painting has been keen.
拍卖时各出价对这幅名画竞争很激烈。
This is because the surface of the earth is not flat but round.
因为地球表面不是平的，而是圆的。