1. As the turtle swims across the oceanarium, the first porpoise swoops down from above and butts his shell with his belly.
    当海龟游过水族馆时, 第一只海豚从上方猛扑下去, 并用腹部撞击龟壳.

2. In another game, as the turtle swims across the oceanarium,
    在另一场游戏中，当海龟游过水族馆时，