face mask

• If they have to leave home , they must wear a face mask and observe good personal hygiene
  若外出，要佩戴口罩，注意个人生。
• Please remove your gloves and face mask , ok ? / would you take off your gloves and face mask
  请脱下你的手套和口罩,可以吗？
• Victor : sure ! by the way , don ' t forget to wear a face mask to english class
  当然好!顺便告诉你,上英文课的时候,别忘了戴口罩
• If they have to leave home , they must wear a face mask and observe good personal hygiene
  若外出，要佩戴口罩，注意个人?生。
• Introduction of a modified face mask in transnasal tracheal intubations with fast induction
  改良面罩在经鼻快诱导气管插管中的应用
• Those caring for the sick or those with respiratory tract infections should wear a face mask
  照顾病人或呼吸道受感染，要戴上口罩。
• Wearing a face mask properly offers protection against respiratory tract infections
  佩戴口罩须知正确使用口罩可以预防呼吸道受感染。
• Wear a face mask if in contact with a child displaying respiratory illness symptoms
  与有呼吸道受感染病徵学童接触的人士，也要戴上口罩；
• A helmet with face mask is necessary to protect the user s head from the full contact impact during
  对打中，一顶有面罩的头盔是必要的护具
• Surgical face masks should be changed at least daily under general circumstances
  供外科手术使用的口罩须每天更换。口罩若有破损，须立即更换。