达尔文吠蛛的蛛丝和钢筋的强度差不多，但却比钢筋个结实，因为它具备很强大的延展性。

The Darwin’s bark spider's silk "is about the strength of steel but much, much tougher, because it also stretches.

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它们比有钢筋水泥保护的涡轮要更容易磨损。

They are also subject to more wear and tear than turbines protected by huge amounts of concrete.

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美国钢铁开发公司旗下所谓的“密西西比微型钢铁厂” 接近完工，该厂将拥有30万吨产能，从事钢筋生产，预计将雇佣约200人。

Steel Development's nearly completed 300,000-metric-ton capacity, so-called micromill in Mississippi will make reinforced metal bar and is expected to employ about 200 people.

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