un·con·tam·i·nat·ed
adjective/ˌʌnkənˈtæmɪneɪtɪd/
/ˌʌnkənˈtæmɪneɪtɪd/
- not harmed by something (for example, dangerous or dirty substances)
未被损害的；未受污染的 - uncontaminated water
未被污染的水
- The equipment is sterilized to ensure that the blood remains uncontaminated.
设备经过消毒，以确保血液不受污染。 - The problems were made worse by the inadequate provision of medical help and uncontaminated milk.
由于医疗帮助和未受污染的牛奶供应不足，问题变得更加严重。
- uncontaminated water