The washing machine would not work because of a defect in the switch.
这台洗衣机的开关有问题，不能用了。
If the big gear did not engage with the small one, the machine would refuse to work.
如果大齿轮与小齿轮不相啮合的话，机器就不会工作。
He gave the machine another trial to see if it would work.
他再次试车，看看那机器是否运转。
He gave the machine another trial to see if it would work.
他再次试车，看看那机器是否运转。
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