crash-dive

n sudden dive made by a submarine or an aircraft, eg to avoid being attacked （潜艇或飞机为免受攻击而实行的）紧急下潜或下降. v [I] dive in this way （潜艇）紧急下潜; （飞机）紧急下降.

crampon, cranberry, crane, crane-fly, cranial, cranium, crank, crankshaft, cranky, crannied, cranny, crap, crape, crappy, craps, crapulence, crapulent, crash, crash barrier, crash helmet, crash-land, crash-landing, crass, crassly, crassness, crate, crater, crater lake, cravat, crave, craven, craving, crawfish, crawl, crawler, crayfish, crayon, craze, crazed, crazily,