si·phon·apteraAHDsīfən+BNC¹⁷³⁹⁹⁵⁺² 基本英英例句 蚤目¹⁰⁰ Noun: fleas Any of various small, wingless, bloodsucking insects of the order Siphonaptera that have legs adapted for jumping and are parasitic on warm- blooded animals. 跳蚤蚤目的各种小型、无翅吸血昆虫中的任一种，长有适于跳跃的腿，寄生在温血动物身上。 hotdic