顾老师英语轻松学

Some 🔊 species 🔊 of 🔊 fish 🔊 are 🔊 hermaphrodites 🔊 , capable 🔊 of 🔊 switching 🔊 their 🔊 sex 🔊 as 🔊 needed 🔊 .

有些鱼类是雌雄同体的，能够根据需要转换性别。