frogman
noun [ C ] uk/ˈfrɒɡ.mən/ us/ˈfrɑːɡ.mən/ -men uk/ˈfrɒɡ.mən/ us/ˈfrɑːɡ.mən/
蛙人
someone who swims or works underwater for a long time wearing breathing equipment, flippers (= rubber or plastic shoes that are longer than the feet), and usually a rubber suit
police frogmen 警方的蛙人
Compare: diver