彩虹行動 [---动]

Jyutping
Pinyin cǎi hóng xíng dòng

Definitions (CC-CEDICT)
  1. the two mass scuttling operations carried out by the German navy: the scuttling of the German fleet at Scapa Flow in 1919 and Operation Regenbogen, the scuttling of U-boats in 1945