It may not be long before we witness the extinction of one of the world's six species of tigers, the Amur (or Siberian) tiger (Panthera tigris altaica).

东北虎（也叫西伯利亚虎）是世界上的六种老虎之一，我们目睹它们绝种的日子将不再遥远了。

youdao

It may not be long before we witness the extinction of one of the world's six species of tigers, the Amur (or Siberian) tiger (Panthera tigris altaica).

东北虎（也叫西伯利亚虎）是世界上的六种老虎之一，我们目睹它们绝种的日子将不再遥远了。

youdao