"That notion is not concrete enough, and it blurs two key components of hope," Doctor Snyder said.

“这个概念不够具体。它模糊了希望的两个关键因素。”斯奈德博士说。

youdao

This is all abstract and not concrete.

这太抽象了，一点都不具体。

youdao

Beauty is not concrete but a door is.

美丽不是具体的东西，但门是。

youdao

The National Ready Mixed Concrete Association points out that using ash in cement is not a new idea.

VOA: special.2009.12.01

It's an interesting question as to whether he really explains how a child goes from a concrete thinker to an abstract thinker, or how he goes from not having object permanence to understanding object permanence.

问题是,他是否真的解释了,儿童思维是如何从具体向抽象转变的,或是真的解释了,儿童的客体永存性概念是如何从无到有的

耶鲁公开课 - 心理学导论课程节选

Costas Synolakis says Japan's concrete sea walls were not built to handle such high waves.

VOA: special.2011.03.21

And my point was that we don't have and did not have concrete evidence to suggest that this was not in reaction to the film.

WHITEHOUSE: Press Briefing

But I'll tell you, having been on the receiving end of information sometimes which one could constitute as, 'warnings, ' they are often difficult to act on, sometimes not very concrete.

CNN: Rice heads to India to ease tensions

Not all concrete ideals of the post-war building boom have survived, Alison and Peter Smithson's polemic Robin Hood Gardens in east London is not long for this life, despite the protestations of the architectural elite.

BBC: Viewpoint: Could people learn to love tower blocks?