我们使用拖拉机牵引农业机械。

We use tractors to pull farm machinery.

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这台拖拉机牵引力大。

The tractor pulls well.

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图为1917年为例牵引引擎，这是世界上第一个拖拉机模型。

Pictured is a 1917 Case traction engine, which was the world's first tractor model.

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图为1917年为例牵引引擎，这是世界上第一个拖拉机模型。

Pictured is a 1917 Case traction engine, which was the world's first tractor model.

youdao