dog-paddle (also doggie-paddle)

n [U] simple swimming stroke, with short quick movements of the arms and legs （游泳动作的）狗刨式. v [I] swim in this way 用狗刨式游泳.

dodder, dodderer, doddering, doddle, dodge, dodgems, dodger, dodgy, dodo, doe, doer, does, doff, dog, dog days, dog-biscuit, dog-collar, dog-eared, dog-leg, dog-like, dog-tired, dog-tooth, dog-trot, dog-watch, dogcart, doge, dogfight, dogfish, dogged, doggedly, doggedness, doggerel, doggie (also doggy), doggo, doggone, doggone (also doggoned), doghouse, dogie, dogma, dogmatic,