1. Zoos are working together to stop animals from going extinct. 动物园正在一起行动（去）阻止动物的灭绝。
2. Animals to which humans are indifferent often lose their habitats and go extinct. 对人类漠然的动物经常是失去了它们的栖息地，灭绝；
3. But no government wants to see the tiger, an emblem of India, go extinct on its watch. 但是没有哪届政府希望看到印度的象征之物—老虎在其任期内灭绝。
英英解释
adj.
1. no longer in existence; lost or especially having died out leaving no living representatives
2. (of e.g. volcanos) permanently inactive
3. being out or having grown cold
