n. action intended to keep a country politically neutral or exclude it from a possible war
n. a chemical reaction in which an acid and a base interact with the formation of a salt; with strong acids and bases the essential reaction is the combination of hydrogen ions with hydroxyl ions to form water
n. (euphemism) the removal of a threat by killing or destroying it (especially in a covert operation or military operation)
n. 中立化, 中立状态, 中和
[化] 中和; 中和作用; 抵消; 使失效