Another view of the bottom end of the engine.

另一种观点的底端发动机。

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Orville climbed on to the bottom wing of his plane and started the engine.

奥维尔爬上他的飞机机翼底部，发动了引擎。

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Orville climbed on to the bottom wing of his plane and started the engine.

奥维尔爬上他的飞机机翼底部，发动了引擎。

youdao