"She's expected to stay home, not to go away to college or do anything that would betray the family's idea of what it is to be a good daughter."

VOA: standard.2010.07.22

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

I understand the motivation for people that say it's a good idea.

我理解那些说它是一个好主意的人的动机。

对于义务投票制 - SpeakingMax英语口语达人

They somehow don't think that's such a good idea, and I get that.

NPR: World Bank Changes, Understanding Unemployment

Don't you think that's a good idea?

CNN: Clinton's November 19, 2007, speech on economic challenges

Now, they're in bonds and CDs, wondering whether that's such a good idea.

NPR: How to Weather a Rocky Economy