liǎng / xìng / yì / xíng / shì / xǔ / duō / dòng / wù / wù / zhǒng / zhōng / cháng / jiàn / de / shēng / wù / xué / xiàn / xiàng

两性异形是许多动物物种中常见的生物学现象。

Sexual dimorphism is a common biological phenomenon in many animal species.