Grex
高密度聚乙烯
🗣️ 情景例句
This is Susan with Jiaotong University student. May I have your name, sir?
我是交通大学的在校生苏珊，请问您贵姓？
We used to have a lot of fun when we were that age.
当我们是变老时，我们过去常有很多趣事。
Jim, where's your father?
吉姆，你爸爸在哪儿？