1. Many animals are endangered by their rarity and beauty.
    许多动物因自身物种珍奇和皮毛美丽而濒于灭种威胁。

2. I might have endangered other divers' lives if I had spilled blood in the pool. For what I knew — that few others knew — was that I was HIV-positive.
    要是我的血溅到了游泳池里，就会危及其他跳水选手的生命。因为我知道--而其他很少有人知道--我是阳性艾滋病毒携带者。