square kilometres

基本解释

The volcano made it above that surface only a million or so years ago, since when the island has grown to about 100 square kilometres.
火山喷发使这座岛屿露出水面距今大概只有一万年左右，自那以后，这座岛屿生长到了大约100平方公里。
"Although the study is based on plant life in Scotland, our models apply across regions spanning hundreds of thousands of square kilometres, " said Clark.
“虽然此项研究是以苏格兰植物生活为基础，但是我们的模式适用于跨越数十万平方公里的地区。” 克拉克说。
And, if the enemy ventured to invade his territory, Peter had another asset – thousands of square kilometres of inhospitable terrain under snow for several months of the year.
而如果他的敌人敢于尝试入侵他的领土，彼得还有另外一个优势——数千平方公里每年数月处于冰雪覆盖下的不宜居住地区。

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