Animals adapt to changing conditions , which might mean a shift in population patterns to areas where pack ice is morerobust year - round.
动物会适应变化的条件，这意味着它们的数量会转移到更加结实的冰盖上去。
2
As you shape the crown, continue to shift the marker 1 st to the left at the end of each round. Switch to double-point needles when necessary.
当你调整这顶帽子的尺寸是，继续转移第一部分在每一圈结束的左边，必要时可以换到第二根针上。
3
That might not seem surprising in this age of electric lights and round-the-clock activities, but co-author David Samson says this shift began long before we developed artificial lighting.