The piers that anchor the house to the ground and the concrete pads on which the chassis sits are constructed on-site, using local labor and conventional construction techniques.

而用来将建筑锚固至地面的基础以及用来放置建筑“底盘”的混凝土平板则可以利用当地传统的技术和劳动力建造。

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One of the big difficulties was labor shortage in the construction field like concrete form work craftsmen.

其中最大的一个困难是工地上缺少劳工比如浇筑混凝土之类的熟手。

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The author holds that scientific labor bears the character of twoness, and people must pay attention to study the concrete form and special rule of scientific labor of modern times.

文章认为科学劳动具有二重性特征，应注意研究现代科学劳动的具体形式与特殊规律。

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But concrete, steel and labor weren't getting any cheaper.

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Homes are built of a mixture of concrete, mud and wood, often by the labor of locals pitching in to help each other.

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