"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。
This is all abstract and not concrete.
这太抽象了,一点都不具体。
Beauty is not concrete but a door is.
美丽不是具体的东西,但门是。
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
Costas Synolakis says Japan's concrete sea walls were not built to handle such high waves.
VOA: special.2011.03.21
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