臥底行動 (ngo6 dai2 hang4 dung6) — an undercover operation; a sting operation [written and colloquial] in Cantonese
ngoˍ₆臥daiˊ²底hangˎ₄行dungˍ₆動简 卧底行动
Mandarin Pinyin: wo4di3 xing2dong4
Meaning of 臥底行動
nounan undercover operation; a sting operation [written and colloquial]