... 要始终做到 We Should Always Be 要做到定期上油 Should Be Regularly Oiled 谈何容易要做到 Easier Said Than Done ...
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should be regularly oiled
应该定期加油吗
以上为机器翻译结果，长、整句建议使用 人工翻译 。
We consider it necessary that the machine should be oiled regularly.
我们认为机器必须定期加油。
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The moving parts of this machine should Be oiled regularly.
这部机器的运转部件应该上油。
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