contamination free

  • 无污染的

contamination free的用法和样例:

例句

  1. Respirators should only be removed when the wearer is in an area that is considered free of airborne hazards, including confirmed or suspected influenza patients.
    呼吸防护口罩只能在无污染的环境中,包括无确诊或疑似流感病人的环境中摘除。
目录 查词历史