where people first learned to write.

那里的人最早学会了写字。

But in an old man who has known human joys and sorrows,

可是老年人已经饱尝了人间的甘苦，

In another game, as the turtle swims across the oceanarium, the first porpoise swoops down from above and butts his shell with his belly.

在另一场游戏中，当海龟游过水族馆时，第一只海豚从上方猛扑下去，用腹部撞击龟壳。

and the existence of underwater features of considerable magnitude.

水下特征差异极大。

Arthur C.Clark once suggested a revolutionary idea passes through three phases:

Arthur C.Clark曾经提出，一个革命性的想法经过三个阶段：

and for several days will probably refuse all food through anger and fear.

甚至一连几天由于愤怒和恐惧而拒绝进食。