Now the study shows, girls with a twin brother perform worse on sexual reproduction than other females.
Now the study shows, girls with a twin brother perform worse on sexual reproduction than other females.
现在研究表明，龙凤胎中的女孩可能生殖方面会较差一些。
Now the study shows, girls with a twin brother perform worse on sexual reproduction than other females.
现在研究表明，龙凤胎中的女孩可能生殖方面会较差一些。