Siver
abbr. simian immunodeficiency virus猿猴免疫缺損病毒
??? 情景例句
Just make the few changes I suggested and your letter will be perfect!
只要改動我提到的個別地方，你的信就會很完美了。
Drugs were the death of him.
毒品斷送了他的生命。
He began his diet a week ago.
他是一星期前開始節(jié)食的。