Formale
聚乙烯
🗣️ 情景例句
Robbie! Who is it? Robbie
是谁呀？
These clothes are dirty, they need to be washed.
这些衣服脏了，需要去洗。
Debbie intends to take short rests every two hours.
黛比计划每两小时休息一下。