Everyone knows that if he shouts in the vicinity of a wall or a mountainside, an echo will come back.

大家都知道，在墙壁或山腰附近发出的喊声，就会听到回声。

either from gas or water, is pushing it.

这种巨大的压力来自地下天然气或水。

in short, the individual in conflict with himself and his frontier environment.

总之，主人公是一个自相矛盾，又与他的拓荒环境相矛盾的人物。

that a series of deep soundings was obtained in the Atlantic and the first samples were collected by dredging the bottom.

才在大西洋测得一个个海水深度，同时通过挖掘海底，取得了研究海底的首批样品。

and particularly by a new consciousness of the philosophical undercurrents in the scientific revolution,

尤其是以科学革命中哲学潜流的新意识为依据，

There are even stories of half-trained elephant calves who have refused to feed and pined to death when by some unavoidable circumstance they have been deprived of their own trainer.

训练了一半的小象，由于不可避免的情况与他们的主人分离后，竟拒绝吃食，消瘦至死。