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The nurse is in contant attendance on the patient.
那位护士一直照料着那个病人。
If the door - to - door salesman fails to meet the requirements of the contant , he will be fined.
如果上门推销员没有达到合同要求，他将被罚款。
The operation principle of contant velocity universal joint with double offset ball basket is introduced.
介绍双偏置式球笼等速万向节的工作原理。
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