Spirocyclane
螺环烷(专指：螺戊烷)
🗣️ 情景例句
I've got to call a caterer.
我应该给宴会承办者打一个电话。
We would like to know how you will pack the silk shirts.
我们想知道你们如何包装这些真丝衬衫。
Needless to say, the bigger the risk an insurance company takes, the higher the premium you will have to pay.
不用说，保险公司承担风险越大，你付的保险费也就越高。