以后几天，他试着学其他海鸥的样儿；他作了认真的尝试，与鸥群一道围绕着码头和渔船嘎嘎叫着争食吃，扎到海里抢点儿面包片和烂鱼。

For the next few days he tried to behave like the other gulls; he really tried, screeching and fighting with the flock around the piers and fishing boats, diving on scraps of fish and bread.

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不过《当代生物学》杂志上的一项研究却表明，在冬季向鸟类投食可能会影响到它们的进化进程。

But a study in the journal Current Biology suggests that feeding birds in winter can influence their course of evolution.

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放弃高脂的零食，一天做100个仰卧起坐，当你发现自己懒散或者尝试学一项新技能的时候站直身体。

Give up high-fat snacks, do 100 sit-ups a day, stand up straight when you catch yourself slouching or try to learn a new skill.

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