斑马的身体部位: coat, tail,leg, hoof, tooth,mouth,mane 红蟹的身体部位: leg,front claw,gill,lung,mouth 海象的身体部位: skin, flipper, blubber,mouth, lip,tongue, tusk,whisker, air pouch 动物生活的地方:habitat,territory, burrow,forest, ocean,sea,icefloe, land 与动物迁徙有关的词:migrate,migration,journey,round-trip,stay,move, cross, reach tens of thousands of数以万计的 dry up 干涸 instead of...而不是:.....;作为··..··的替换 make a difference 有影响 far away from.··离·.....很远 -般过去时的被动语态，例如: In 2004,a large fence was placedinthe Makgadikgadi and Nxai Pan National Park. 现在完成时的被动语态，例如: Walls and tunnels have been built tofunnel crabs under roadways, so fewer crabs get run over by cars 动词的现在分词形式作伴随状语，例如: Scientists are studying thezebras and their babies, hoping that their numbers will grow.