In our distant, amoeba-like ancestors, clusters of genes were already forming to work together on building cell walls and on other very basic tasks essential to life.

在我们变形虫那样的远古祖先身体里，基因之间已经形成了固定的组合来一起从事构成细胞壁和其他基本的生命必要活动。

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Durability of structure is one of the basic function which structure is essential, it is closely to design, construct, material and employ environment, maintenance, it direct to effect working life.

结构的耐久性是结构必须满足的基本功能之一，既与设计、施工和材料等因素有关，又与使用环境和维护维修等条件有关，它直接影响结构的使用寿命。

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Life knowledge provides not only basic experience for theoretical knowledge but essential reference for the conquest of difficulties arising in theoretical knowledge itself.

生活认识不仅为理论认识提供了基本的经验，而且为理论认识对自身困难的克服提供了一个基础性的参照。

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Cathie Black is president of Hearst Magazines and author of Basic Black: The Essential Guide for Getting Ahead at Work (and in Life), a practical and motivational guide for women in the workplace.

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