The great white shark is the world's largest known predatory fish. When a great white shark is born, it swims away from its mother. Baby sharks are on their own right from the start, and their mother may see them only as prey. Sharks' favorite preys are sea mammals , especially sea lions and seals . Great white sharks can grow to an average of 15 feet （4.6 meters） in length. They are found near shores along most of the temperate coastlines around the world. In the fall, some females migrate to warmer waters to give birth . Great white sharks are decreasing in numbers due to years of being hunted by man for fins .
-predatory ［'predətri ］ adj. 捕食性的，食肉的
-prey ［preɪ ］ n. 猎物，被捕食的动物
-mammal ［'mæml ］ n. 哺乳动物
-seal ［si:l ］ n. 海豹
-average ［'ævərɪʤ ］ n. 平均，平均数
-temperate ［'tempərət ］ adj. 气候温和的，温带的
-coastline ［'kəʊstlaɪn ］ n. 海岸线
-migrate ［'maɪgreɪt ］ vi. 随季节而移居，迁徙
-decrease ［dɪ'kri:s ］ n. 减少
-fin ［fɪn ］ n. 鳍，鱼翅
on one's own 独立地，靠自己
give birth 生孩子，产仔
1. Their mother may see them only as prey.
它们的母亲可能只会把它们看作猎物。
I see her as my friend. 我把她视为我的朋友。
He sees these problems as challenges. 他把这些问题看作挑战。
2. Great white sharks are decreasing in number due to years of being hunted.
由于常年被人类猎杀，大白鲨的数量正在减少。
I cannot go out due to the rain. 因为下雨，我不能出门。
He was late due to the traffic jam that morning.
他那天早上由于交通拥堵迟到了。
大白鲨
大白鲨是世界上已知最大的食肉鱼类。一只大白鲨出生以后，就从母亲身边游走。幼鲨一出生就独立自主，自己生活，其母亲可能只把它们看作猎物而已。大白鲨最喜欢的猎物是海洋哺乳动物，尤其是海狮和海豹。大白鲨平均能长到15英尺（4.6米）的长度。世界各地大多数温带气候的海岸附近都能发现大白鲨。到了秋天，雌鲨会迁徙到比较温暖的海域里去生产。由于人类常年猎杀大白鲨以取其鳍，大白鲨的数量正在减少。