Poly(vinyl chloride)
[化] 聚氯乙烯
🗣️ 情景例句
Hi. Welcome.
嗨， 欢迎你 。
If I had known her telephone number, I would have called her.
如果我知道她的电话号码，我就给她打电话了。
Some children were playing games on the bank and there were some people rowing on the river.
河岸上有些孩子正在玩耍，河面上有些人正在划船。