Polarbearsaresufferingina 61 (warm)world. Polarbea...
问题详情： Polarbearsaresufferingina 61 (warm)world. Polarbearsliveinenvironmentstoocoldformostanimals. 62 muchoftheyear,theyliveandhuntonthefrozenArcticseaice.Naturehasprepared 63 f...
问题详情： Polarbearsaresufferingina 61 (warm)world. Polarbearsliveinenvironmentstoocoldformostanimals. 62 muchoftheyear,theyliveandhuntonthefrozenArcticseaice.Naturehasprepared 63 f...