Kr

名词 kr:

1. a colorless element that is one of the six inert gasses; occurs in trace amounts in air
   同义词：krypton, atomic number 36
2. a communist organization formed in Cambodia in 1970; became a terrorist organization in 1975 when it captured Phnom Penh and created a government that killed an estimated three million people; was defeated by Vietnamese troops but remained active until 1999
   同义词：Khmer Rouge, Party of Democratic Kampuchea, Communist Party of Kampuchea