海龟、北极熊和大熊猫只是世界上成千上万濒临灭绝的动物中的一部分。
Sea turtles, polar bears and giant pandas are just some of the thousands of animals in this world that are at risk of extinction.
一部分北极地区鸟儿的死亡很奇怪，从另一角度看，甚至是很滑稽的，他解释道。
A segment of bird deaths in the Arctic, he explained, are strange and, in a way, even comical.
阿拉斯加位于加拿大西北部，距美国本土非常遥远，它是北极圈的一部分。
Alaska is on the border of northwestern Canada, far enough north that part of it is within the Arctic Circle.
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