4 Turbellarians are monoecious with the reproductive systems adapted for internal fertilization. And the monogenetic flukes (class Monogenea) are mostly ectoparasites of fishes.
涡虫
同体
，生殖系统适于体内受
。单起源吸虫（单殖纲）大多
寄生虫。
；单性生殖，单(亲生)殖②单成4 Turbellarians are monoecious with the reproductive systems adapted for internal fertilization. And the monogenetic flukes (class Monogenea) are mostly ectoparasites of fishes.
涡虫同体，生殖系统适于体内受。单起源吸虫（单殖纲）大多寄生虫。
声明：以上例句、词性分类均由互联网资源自动生成，部分未经过人工审核，其表达内容亦不代表本软件观点；若发现问题，欢迎向我们指正。
