同体的

The country is a member country of EEC.

这个家欧洲经济共同的成员。

Britain belongs to the EEC.

英欧洲经济共同的一个成员。

4 Turbellarians are monoecious with the reproductive systems adapted for internal fertilization. And the monogenetic flukes (class Monogenea) are mostly ectoparasites of fishes.

涡虫雌雄同的，生殖系统适于内受精。单起源的吸虫（单殖纲）鱼的外寄生虫。