Polyvinylidene
a. [化]聚偏二乙烯的
🗣️ 情景例句
I'm afraid you're right.
恐怕你对了。
What is worth doing at all is worth doing well.
事既值得做，就把事做好。
An apple a day keeps the doctor away.
一天一苹果，医生远离我。