An area half the size of the United States 一个面♥积♥相当于半个美国的区域
30% of its surface area in 30 years. 在过去30年间减少了30%
Its surface area in the summer shrinks year by year. 冰冠的面♥积♥每年夏天都在缩减
the entire area will be designated as a National Wildlife Refuge. 整个地区将被划为野生动物保护区
if it's your exact area of expertise. 这是不是你擅长的领域
So, I thought I'd take Louie here, for a little tour of the area. 我觉得可以带路易稍微参观一下