冰的硬度和混凝土差不多。
这里大多数房屋是用玻璃和混凝土制成的。
建设一个国家需要的,要远多于钢筋和混凝土。
They're spending money on concrete, and bricks, and machinery, and they could be doing that wisely or unwisely and that's beyond finance to evaluate.
他们花钱买混凝土,砖块和机器,这个决策可能明智也可能不明智,但这不是金融学的讨论范畴
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