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When air is moving, the metal is pivoted on the hinge.
当空气流动时，金属板在铰链上转动。
youdao
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The whole apparatus is pivoted so that it can follow the Sun around the sky.
整个设备都是可回转的，因此它能跟着太阳在天空中转。
youdao
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The whole apparatus is pivoted so that it can follow the Sun around the sky.
整个设备都是可回转的，因此它能跟着太阳在天空中转。
youdao