Half the time, I don't have the slightest idea what he's talking about.

我常常对他所谈论的没有一丁点儿概念。

《柯林斯英汉双解大词典》

We need to get rid of the idea that we must be liked all the time in order to be worthwhile.

我们需要摆脱那种必须一直受人爱戴才有价值的观念。

《柯林斯英汉双解大词典》

This was a historic leap that even surpassed the humanitarianism of ancient Greece, which was a pioneering idea at the time.

这是一个历史性的飞跃，甚至超越了古希腊的人道主义，这在当时是一种先锋思想。

youdao

The idea of permitting mentally disabled people to compete in sports was revolutionary at the time.

VOA: special.2009.08.23

One of the things that extended time in the wilderness allows is sort of a reorienting of the idea of control.

在野外读过的漫长时间,让我们懂得很多事情，其中之一,是对于“控制“这一概念的重新认识。

普林斯顿公开课 - 人性课程节选

At the same time you will get not just the second or third implementation of a good idea funded.

同时你得到的又不仅仅是对新想法的,二手或者三手实施方案。

斯坦福公开课 - 微软CEO-Steve.Ballmer谈科技的未来课程节选

Quite suddenly, a Grand Coalition is an idea whose time seems to have come.

FORBES: The Fog Begins to Clear

Employing the logic of vaccination using proven drugs may be an idea whose time has come.

ECONOMIST: AIDS

But a prominent Democratic liberal said the buy-in plan was an idea whose time had come.

CNN: Clinton's Tropical Respite Gives Way To Work - 01-04-98