N-COUNT A walrus is a large, fat animal which lives in the sea. It has two long teeth called tusks that point downward. 海象
Wildlife like polar bears and walruses that depend on sea ice to live is also in danger.
像北极熊和海象这样依靠海冰生存的野生动物也处于危险之中。
Each spring, thousands of walruses return to the Walrus Islands in northern Bristol Bay to feed, rest, and sometimes die.
每年春天，成千上万只海象返回到布里斯托尔湾北部的海象群岛觅食、休憩、有时死亡。
Moreover, walruses and seals drive themselves through the water with thrusts of their hind flippers, but sea lions use their front flippers.
此外，海象和海豹用它们的后鳍推动自己在水中运动，而海狮用它们的前鳍。
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