Polynorbornene
[化] 聚降冰片烯
🗣️ 情景例句
How long is it going to take for me to get there?
到那里还需要多久时间
Please give me a piece of pie.
请给我一个苹果饼。
Yes, it is.It's very urgent.I feel awful. I have a terrible toothache.
是的，很急。我难受极了，牙痛得要命。