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Every solid object will reflect a sound, varying according to the size and nature of the object.

任何固體者反射聲音，反射的聲音因物體的大小和性質(zhì)的不同而不同。

The question became one of whether Man could control the disease he had invented.

現(xiàn)在的問題是，人類能否控制住這種人為的疾病。

Moreover, as soon as new knowledge is acquired, it is now turned to practical account.

而且，新知識一旦獲得，便得到實際應(yīng)用。

It 'flies', therefore, but it cannot fly higher---

這樣，船就能飛了，但飛不高。

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

尤其是以科學(xué)革命中哲學(xué)潛流的新意識為依據(jù)，

and are capable of a considerable degree of personal affection.

而且會對主人產(chǎn)生相當(dāng)深厚的私人感情。