African monkeys infected with the virus that causes simian aids have rarely developed aids .
非洲猴子在感染了猿类aids的病毒后很少发病。
Young males , whether simian or human , prefer toys that can be used actively or propelled in space , and which afford greater opportunities for rough play .
年幼的雄性，不论人类还是猴子都喜欢那些有动力、能运动的玩具，而这些也给他们更多机会做粗犷的活动。
Even fully paid-up members of the enlightenment , people who would not for a moment deny humanity 's simian ancestry , are often sceptical .
即使是完全信赖启蒙运动的人士，这些从不否认人的猿血统祖先的人们，也经常持怀疑论。
The three previously known hiv strains are related to the simian virus that occurs in chimpanzees .
三个已知的hiv病毒菌株都与在黑猩猩身上发现的猿类免疫缺陷病毒（siv）有关。
The finding upsets a widely held scientific belief that chimpanzees , the closest relatives to humans , can get the virus that causes simian aids but without harm .
