Polynorbornene
[化] 聚降冰片烯
🗣️ 情景例句
I'd like you to meet my friend Nat Baker.
我来向你们介绍我的朋友Nat Baker。
Does it make any difference to you whether we have our lesson at two o'clock or at three o'clock?
我们在两点上课还是在三点上课，你觉得有关系吗？
Any thing else?
还要别的吗？