Spiropentane
螺戊烷
🗣️ 情景例句
I see. Then you don't have any collateral.
我明白了。那么你们没有任何担保物。
I invited hime to come up, but he wouldn't.
我请他上来，但是他不肯。
He did everything very slowly.
他做什么都很慢。