free from contamination中文什么意思

没有污染

没有杂质

无污染

• free:    adj. (freer; frees ...
• from:     from above [ ...
• contamination:    n. 污染；污秽，污物；(语言的)交 ...

例句与用法

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1. The wire must be free from contamination , rust and mechanical damage
   钢丝表面无污染,锈蚀和机械损伤
2. Surveillance forms a vital part of our operations at the fehd , not just in the important task of preventing vector - borne diseases , but in helping to ensure the food we eat is safe and free from contamination
   监察行动是本署工作的主要一环，不但对预防媒传疾病至为重要，亦有助确保食物安全和不受污染。
3. Article 91 the vessel or aircraft coming from a yellow fever prevalent area but free from contamination may undergo sanitization as stipulated in item 3 of article 89 of these implementation rules if the health and quarantine organ considers it necessary
   第九十一条对没有染疫的船舶、航空器，如果来自黄热病疫区，卫生检疫机关认为必要时，可以实施本细则第八十九条第(三)项规定的卫生处理。