carnivorous or bloodsucking aquatic or terrestrial worms typically having a sucker at each end
同义词：leech, hirudinean
bloodsucker详细解释
blood.suck.er n.（名词）An animal, such as a leech, that sucks blood.吸血动物：吸血的动物，例如蚂蟥An extortionist or a blackmailer.勒索者，敲诈者A person who is intrusively or overly dependent upon another; a parasite.寄生虫：剥夺别人利益或过分依赖他人生活的人；寄生虫 【引伸】 blood.suck.ing adj.（形容词）
