Polrvinyl
[医] 聚乙烯, 乙烯聚合体
🗣️ 情景例句
I grew up in a very close, loving family.
我生长在一个亲密友爱的家庭中。
I have a staff of ten.
我手下有十个职员。
They stared at the huge tiger with awe.
他们敬畏地看着那头巨虎。