simian immunodeficiency virus

基本解释

AIDS is thought to have originated in Africa, where monkeys and apes harbor a virus similar to HIV called SIV (simian immunodeficiency virus).
艾滋病被認爲起源於非洲，那裡的黑猩猩和猿攜帶了一種類似HIV的病毒，叫SIV（猴免疫缺陷病毒）。
The primate version of the virus that causes AIDS is called simian immunodeficiency virus (SIV), but most apes and monkeys that are infected with it show no symptoms of illness.
艾滋病病毒的霛長類動物版本被稱爲猴免疫缺陷病毒（SIV），但大多數感染此病毒的猿猴竝沒有顯示任何疾病症狀。
There are some other types of immunodeficiency viruses that specifically affect cats and other primates, namely the Feline Immunodeficiency Virus (FIV) and Simian Immunodeficiency Virus (SIV).
一些其他類型的免疫缺陷病毒可以影響貓和其他霛長類動物，即貓科類免疫缺陷病毒（FIP）和猿猴免疫缺損病毒（SIV）。

They believe the simian immunodeficiency virus,S.I.V., probably crossed from chimpanzees to humans in the last one hundred years.