What a ridiculous idea!

多么荒谬的念头！

youdao

That ridiculous idea was put forward by his brother.

这个怪念头是他哥哥想出来的。

youdao

PROF. : Most people once thought rocket science was a ridiculous idea.

大多数人都曾经认为火箭科学，是一个荒谬的想法。

youdao

They can pretty much pack it up and go home, because everyone's going to think they're ridiculous, no one will believe what they say, and it's a stupid idea anyway, is basically the gist of this conversation.

他们就可以打包回家了，因为每个人都会认为他们很荒谬，没有人会相信他们的说法，这是个很愚蠢的想法，这就是他们当时谈话的大概意思。

麻省理工公开课 - 化学原理课程节选

Their apparent aim is to turn the Cape into an Islamic state a ridiculous idea maybe, but their threats are not.

ECONOMIST: South Africa

One vaguely ridiculous idea that might actually work would be to set up a station as customers entered the store.

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As the real world repeatedly demonstrates, this is a resoundingly ridiculous idea.

FORBES: Fact and Comment