可一项新研究显示鸣鸟的骨头其实很结实，其密度也比相同体积的哺乳动物的大。

But a new study shows that songbirds' bones are actually pretty tough. In fact, they're more dense than the bones of mammals of the same size.

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花叶万年青一种植物，花叶万年青属，原产于热带美洲，有结实的节茎和大的多样化的叶子，可做为室内植物栽培。

Any of several plants of the genus dieffenbachia native to tropical America having stout jointed stems and large variegated leaves and widely cultivated as an indoor plant.

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所有的连接和布线一样结实的，可实际使用的坚固的。

All connections and cabling are as stout as can be practically made for rugged use.

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