日期:
来源:雅诚德英语网
However, chimpanzees are highly endangered species, but also a great size, easy breeding and rearing, the cost of expensive, difficult to study as an animal model of AIDS.
然而,黑猩猩是高度濒危物种,而且体型巨大,不易繁殖和养育,费用昂贵,难以作为艾滋病研究动物模型。