"Extinction" 是灭绝的英文单词。这个单词来源于拉丁语 "extinctus"，意思是"熄灭"或"消失"。

例句：

The dinosaurs became extinct milpons of years ago. (恐龙在数百万年前灭绝了。)
Many species of animals and plants are at risk of extinction due to habitat loss and human activities. (由于栖息地的损失和人类活动，许多动植物物种正面临灭绝的风险。)
The passenger pigeon was once a common bird in North America, but it became extinct in the early 20th century. (客机鸽曾经是北美的常见鸟类，但在 20 世纪初灭绝了。)