CS gas
noun
mass noun
- a powerful form of tear gas used particularly in the control of riots科斯二氏气（尤指用于控制暴乱的一种强效催泪瓦斯）。
词源
1960s: from the initials of Ben B. Corson (born 1896) and Roger W. Stoughton （1906-57）, the American chemists who discovered the properties of the chemical in 1928.