compacted to form permanent ice sheets several kilometers thick. 压缩成了几千米厚的永久性冰层
Graced with a look of permanent surprise, 外表永远是一副惊讶的样子
But you don't know if the paralysis he already has will be permanent. 但你不知道他目前的瘫痪是不是永久性的
he would serve the realm in permanent exile. 永久流放长城为国效力
Predators with permanent territories must tough it out, 定居于此的捕食者只能选择熬过去
Fairy Terns are permanent residents. 塞舌尔白燕鸥是这里的永久居民
These permanent holes in the ice provide seafood throughout the winter. 这个长年不冻的水窟窿提供了整整一个冬天的食物
a permanent hole in the sea ice, kept open throughout the winter by strong ocean currents. 冰间湖是结冰的海洋上永久性的洞孔 因为有强大的洋流使它们冬天也不会冰封
these glow worms have solved the biggest challenge that permanent cave dwellers face - 这些萤火虫成功地解决了 终生穴居动物面临的最大难题