youdao

One of the most important facts about concrete for the Romans was that it can be created underwater.

对于罗马人来说，混凝土最重要的事实之一就是它可以在水下建造。

youdao

Moreover, the individual's ends are not really given, for there is no reason to assume that they are set in concrete for all time.

此外，人的目的并不真是既定不变的，没有理由假定，无论何时人的目的都是固定的。

youdao

Men in two special factories worked day and night to make the concrete building material for the dam.

VOA: special.2009.08.12

Now let's just make this more concrete for you.

说得再具体点

耶鲁公开课 - 博弈论课程节选

And the person we have to thank for actually giving us this more concrete way to think about what a wave function squared is is Max Born here.

需要感谢，马克思，波恩,给了我们，这个波函数平方的,具体解释，事实上。

麻省理工公开课 - 化学原理课程节选

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