以下に英文(一部省略)とその和訳(うまく訳せてない箇所)を書きます。全体的な文意がわからず、下記にある訳が微妙です。回答をどうぞよろしくお願いします。
The fact that modern man is constantly moving in-to new environments gives the impression that he is enlarging the range of his biological adaptab-ilities and thus escaping from the bondage of h-is past. This is only an appearance. Wherever he goes, and whatever he does, man is successful on-ly to the extent that he functions in a microen-vironment not drastically different from the one under which he evolved."具体説明の省略"There is no hope whatever that man's biological nature c-an be changed enough to enabl-e him to survive w-ithout the earth's atmosphere; in fact, the very statement of this possibility is meaningless. Ho-mo sapiens achieved his characteristics as a bio-logical species more than 100,000 years ago, and his fundamental biological characteristics could not be drastically altered without destroying h-is very being. He developed his human attribute-s, in the very act of responding to the environ-ment in which he evolved. The earth has been his cradle and will remain his home.
(3)どこへ行こうと何をしようと、人は自らが進化したものと少しだけ異なる微環境で、単にどれほどの役目を果たすかに依って成功する。(8～10)ホモ＝サピエンスは自らの特徴を１０万年前よりも多く存在する？生物種として確立？した。そして人の本質的な生物学的特徴はその人間そのもの？を破壊しないと、徹底的には変化しない。人は、自らが進化した環境に応じるというまさしくその行動で、自らの人性を発達させた。
