adj.灭绝的，绝迹的，绝种的，不再存在的，消亡了的，废除了的，不再活跃的，死的

The animals suddenly became extinct .
动物会突然灭绝。
His hope of getting some employment was extinct.
他要找到工作的希望落空了。
Tiger could become extinct in the wild.
老虎在野生环境中可能会绝种。
The dodo, a flightless bird, is now extinct due to human hunting and habitat loss.
渡渡鸟，一种不会飞的鸟类，由于人类狩猎和栖息地丧失而灭绝。
The woolly mammoth, once a dominant species in the Ice Age, is now extinct.
长毛猛犸象，冰河时期的主导物种之一，现已灭绝。
Dinosaurs, once the dominant life form on Earth, became extinct around 65 million years ago.
恐龙，曾经是地球上的主导生物形式，大约在6500万年前灭绝。
The passenger pigeon was once abundant in North America, but it has been extinct since the early 20th century.
旅鸽曾在美国广泛存在，但已于20世纪初灭绝。
The Great Auk, a sea bird, vanished from the face of the earth after being hunted for its feathers.
大海雀，一种海鸟，因羽毛被捕猎而从地球上消失。
The Tasmanian tiger, native to Australia, is considered extinct due to hunting and habitat destruction.
塔斯马尼亚虎，澳大利亚本土动物，因捕猎和栖息地破坏而灭绝。
The Caribbean monk seal, once widespread across the region, is critically endangered and may soon become extinct.
加勒比海僧帽海豹，曾遍布该地区，现在极度濒危，可能很快灭绝。
The Pyrenean ibex, a mountain goat found in Spain, was declared extinct in 2000 after surviving only in captivity.
比利牛斯山羊，西班牙的一种山羊，2000年被宣布灭绝，仅存于圈养中。
The Yangtze River Dolphin, also known as the Baiji, disappeared from the wild in the late 20th century due to pollution and overfishing.
长江江豚，又称白鳍豚，已在20世纪末期因污染和过度捕捞而从野外消失。
The Moa, a group of large flightless birds, disappeared from New Zealand's ecosystem when humans arrived.
恐鸟，新西兰的一种大型不会飞的鸟类，随着人类的到来而灭绝。