他们在建筑业工作。
他的夫人叶莲娜•巴图琳娜在建筑业叱咤风云，是俄罗斯的女首富。
His wife, Yelena Baturina, a construction magnate, is Russia's richest woman.
因此在建筑业范围内，混凝土是水泥与沙或沙砾等填充物混合之后的产物。
So in the construction industry concrete is the stuff that results when you mix cement with filler material like sand or gravel.
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