Of course, some worry lies in replacing agricultural workers.
当然，有些人担心农业工人会被取代。
They worry that replacing a simple shaft with a complex gearbox will increase maintenance costs and make it more likely that something will go wrong.
他们担心将简单的轴换为复杂的齿轮箱将增加维护成本一些设备将容易损坏。
They worry that replacing a simple shaft with a complex gearbox will increase maintenance costs and make it more likely that something will go wrong.
他们担心将简单的轴换为复杂的齿轮箱将增加维护成本一些设备将容易损坏。
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