Polycarbonate
[化] 聚碳酸酯
🗣️ 情景例句
Mr. O'Neill is the publisher of several magazines. O'Neill
先生是好几家杂 的发行人。
Why are you always late? You're fired!
你怎么老是迟到？你被解雇了！
What row are you in? Do you know?
你们知道你们在哪一排吗？