两性特征,两性人
However, a minority are erotically attracted to both men and women ( ambisexuality ), and an even smaller minority are attracted mainly to partners of their own sex ( homosexuality ). 人们在性的层级上是异性恋或同性恋，这就表明他们被另一性的性伴所性吸引或被同性所性吸引。大多数个体发展成明显的对另一性的性伴有性喜好（异性恋）。
