Polynorbornene
[化] 聚降冰片烯
🗣️ 情景例句
I'll call and find out.
我打电话问看看。
Fear is often greater than the danger.
杞人忧天。
Burglar alarms going off at any time of the day or night serve only to annoy passers-by and actually assist burglars to burgle.
防盗警报器在白天和黑夜的任何时候都会响起来，它的作用只是骚扰过路行人，而实际上却帮助窃贼入室行窃。