dirty ones hands
脏手
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Manufacturing requires math, geometry, logic, basic science, engineering and technology skills coupled with a strong work ethic and willingness to get ones hands dirty.
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Poor piercing hygiene practices such as reusing dirty equipment or not washing ones hands or changing gloves may also enable infections to be spread.
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