tear gas

名词 tear gas:

1. a gas that makes the eyes fill with tears but does not damage them; used in dispersing crowds
   同义词：teargas, lacrimator, lachrymator

动词 tear gas:

1. attack with teargas; subject to teargas fumes
   同义词：teargas

1. The police fired about50 tear gas grenades.
   警察发射了约50枚催泪弹。
2. A device or substance, such as tear gas, used to incapacitate individuals temporarily, as in riot control.
   致残剂一种可使人暂时致残的装置或物质，如平定暴乱时所用的催泪瓦斯