Polynorbornene
[化] 聚降冰片烯
🗣️ 情景例句
I'd like to cash some traveller's checks here.
我想在这儿兑换一些旅行支票。
We can't rely on him.
我们不能依赖他。
He's picking the apples on that tree. He's putting them in a basket.
他在摘那棵树上的苹果。他正在把苹果放进一只篮子里。