Obviously, the amounts that are in cigarettes are not enough that people are dropping dead of cyanide poisoning, but still it's not a good idea you definitely want to minimize your exposure.

显然，香烟中的氰化物含量不足,以使人中毒而死，但这毕竟不是一个好主意,你绝对会想要将接触氰化物的机会减到最少。

麻省理工公开课 - 化学原理课程节选

And you know it's not the necessarily a good idea to do it, you start with "The thing is".

你心里清楚这么做并不一定是个好主意，你就可以用“The thing is”来回答他们。

The thing is 课堂 - SpeakingMax英语口语达人

But if you have enough energy, or you have too much energy stored in your body and body fat, then the brownie's not such a good idea because it provides too much, and of course not nearly the nutrients that the broccoli would provide.

但如果你的身体能量充沛,或者能量过多,体态肥胖,那么布朗尼提供过多热量,不是首选,提供的营养素也不及花椰菜

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选