2015
等腰三角形的定义
21 年前
视频简介
This is the last frontier, endless white plains stretching out to the North Pole, a land of ice running over a frozen ocean. This place can be challenging, but life in the Arctic is about to get even harder for Kina & Yuk. The brave Arctic foxes will soon become parents for the first time. Arctic winters are no longer what they used to be and global warming is reshuffling the c...。