同体的

The country is a member country of EEC.

这个国家欧洲经济共同的成员国。

Britain belongs to the EEC.

英国欧洲经济共同的一个成员国。

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

涡虫同的，统适于内受精。单起源的吸虫（单纲）大多鱼的外寄虫。