Poly(vinyl formal)
[化] 聚乙烯醇缩甲醛
🗣️ 情景例句
I brought you a chicken sandwich and a glass of milk.
我替你带来一份 肉三明治和一杯牛奶。
What's so funny?
有什么好笑的？
Does the computer ever make a mistake.?
计算机出错吗？