视频对话：
... individual died in a zoo in 1993.
……单独生活的袋狼在1933年死在动物园里。
And today the species may well be extinct.
现在这个物种可能已经灭绝了。
本期学习词汇：
extinct
adj.灭绝的；绝种的；消逝的；破灭的
例句：
1. Nearly extinct rhinos found in malaysia.
马来西亚发现近乎灭绝的犀牛。
2. Some people say that's why the dinosaurs went extinct.
有人说恐龙就是这么绝种的。
3. The manx language became extinct at the beginning of the 20th century.
马恩语在20世纪初期消失。