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So archaeologists have neither history nor legends to help them to find out where the first 'modern men' came from.

于是，考古學家們既缺乏歷史記載，又無口頭傳說來幫助他們弄清最早的“現代人”是從哪里來的。

rising at one-foot intervals all the way to the top of the atmosphere.

并按1英尺的間隔從地面一直排列到大氣層的頂端。

and these will ply the short wings with such irresistible power that they can bore for long distances through an opposing gale before exhaustion follows.

這些肌肉以巨大的力量扇動短小的翅膀，使這類鳥能頂著大風飛行很遠的路才會疲勞。

After all, all living creatures live by feeding on something else, whether it be plant or animal, dead or alive, and it is only by chance that such a fate is avoided.

因為一切生物都是靠吃別的東西來活命的，不管這種東西是植物還是動物，死的還是活的，因此，生物偶爾才能避免被吃掉的命運。

and they provided a striking demonstration of the potentialities hidden in instruments and apparatus.

并充分顯示出了儀表和儀器的潛在力量。

The trainer stands in front of the elephant holding a long stick with a sharp metal point.

馴練員手持一根有鋒利金屬尖頭的長棒，站在象前。