口罩[kǒu zhào]mask; respirator; breathing mask; gauze mask (worn over nose and mouth)
As students, we should keep ourselves clean. One way to keep ourselves clean is too wash our hands. It is very good to wash our hands before any meal because our hands may be very dirty. If we don't wash our hands, we may be ill. If we are ill, we cannot go to school and cannot study well.
Because of the epidemic, we all know that masks are necessary for us to go out now.As a young Chinese, we should abide by the safety rules and wear masks according to the regulations for the sake of others as well as for ourselves.
口罩:soil respirator
口罩的英文:
mask
respirator
gauze mask
breathing mask
mouth-muffle
参考例句:
Today, a few people wear surgical masks in public, and some dare not to dress in light-colored clothing.
现在一些人在公共场合戴着外科手术的口罩,更有一些人不敢穿浅色的衣裙。
一般来说,在外教的课堂上,用mask来表达口罩的用法比较普遍。在词典中,mask指的是:a covering for part or all of the face, worn to hide or protect it.(一部分或全部脸的覆盖物,用来隐藏或保护它。)
N95口罩=N95-certified masks
为啥叫N95型口罩?因为是NIOSH(National Institute for Occupational Safety and Health,美国国家职业安全卫生研究所)认证的9种防颗粒物口罩中的一种。
达到N95等级的口罩可以滤除超过95%的直径大于0.3微米的颗粒物。
A mask rated N95 filters out more than 95% of particles larger than 0.3 microns.