Trees and bones are strong and relatively lightweight.

树干和骨骼不仅非常强韧，而且重量相对较轻。

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However, because this UI test system is relatively lightweight, it can't handle all possible UI testing situations.

然而，由于这个UI测试系统相对轻量级，所以它无法应付所有可能的UI测试情况。

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But in soccer, with a large, relatively lightweight ball, this sharp, unexpected curve could actually occur in a game.

但是足球场则很大，球相对较轻，那种急速的，无法预料的弧线故而能够在比赛中出现。

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Pebble feels very comfortable when fastened on the wrist -- it's relatively lightweight, and the smooth edges maintain their distance from sensitive skin.

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The Z10 has the look and feel of an iPhone 5 as far as industrial design, and is relatively lightweight at 135.4 grams.

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Because hybrid mobile apps are faster to create, they make more sense when the app you are trying to create is a relatively lightweight workflow .

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