He tried to escape by diving into a river.

他企图跳入河中逃走。

《柯林斯英汉双解大词典》

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.

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。

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