respirator

1. N-COUNT A respirator is a device that allows people to breathe when they cannot breathe naturally, for example because they are ill or have been injured. 呼吸機(jī); 人工呼吸器

She was so ill that she was put on a respirator. 她病得非常嚴(yán)重，被戴上了人工呼吸器。

2. N-COUNT A respirator is a device you wear over your mouth and nose in order to breathe when you are surrounded by smoke or poisonous gas. 防毒麪具

It's smart to use a respirator if you're working with paint. 如果你工作時(shí)要使用油漆，戴上防毒麪具會(huì)是明智之?dāng)H。