carnivorous or bloodsucking aquatic or terrestrial worms typically having a sucker at each end

同义词：bloodsucker??/??hirudinean

a follower who hangs around a host (without benefit to the host) in hope of gain or advantage

同义词：parasite??/??sponge??/??sponger

draw blood

同义词：bleed??/??phlebotomize??/??phlebotomise