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Wait for the concrete to go hard.

等待混凝土凝结。

《牛津词典》

Living conditions are hard in this concrete, steel and glass urban jungle, that has been cut away from nature a long time ago, with pollution reaching truly alarming levels.

在这个混凝土，钢铁和玻璃的都市丛林中，很久以前就与大自然无缘，污染达到令人震惊的程度，生活条件极为艰苦。

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Even at the bottom, the trunks of the spindly, shag-topped trees are thin enough to wrap a good hug around, yet hard as concrete.

BBC: Colombia��s valley of the palms

The Environment Agency scheme includes a combination of hard defences, reinforced concrete walls with sheet metal cores and earth embankments.

BBC: Towns' flood defences in place

Clearly Bangladesh were so disappointing again - with the exception of Tamim Iqbal - that it's hard to make too many concrete judgements or bold statements, but what I have learned from this series is that Steven Finn is a bowler of great potential.

BBC: Jonathan Agnew column