这意味着群居的黑猩猩比独居的猩猩聪明。
orangutan mothers face up to eight years of single parenthood raising their infants.猩猩母亲们则要面对长达八年的养育幼儿的单亲生活。
When people talk about getting an all-over tan for summer, they e not usually talking about getting an all-over orangutan.当人们说夏天要把皮肤晒成古铜色时,他们通常并不是说要晒成红毛猩猩那样。