Borobutane
丁硼烷
🗣️ 情景例句
I'll get you to help serve later.
等一会我会叫你帮忙分菜。
You never know what you can do till you try.
事非经过不知难。
Some of the bigger firms are engaged in researches which are of such general and fundamental nature that it is a positive advantage to them not to keep them secret.
某些大公司进行的研究属于一般和基础性的研究。因此不保密对他们才有利。