大学英语：one’s thoughts must be directed to the future

16. one’s thoughts must be directed to the future, and to things about which there is something to be done.

一个人应当考虑未来,考虑一些可以有所作为的事情.

17. It is easy to think to oneself that one’s emotions used to be more vivid than they are, and one’s mind more keen.

人们往往会对自己说,我过去感情多么丰富,思想多么敏锐,现在不行了.

18. the other thing to be avoided is clinging to youth in the hope of sucking vigour from its vitality.

另一件需要避免的事就是老想和年轻人呆在一起,希望从青年的活力中吸取力量.

19. Animals become indifferent to their young as soon as their young can look after themselves, but human beings, owing to the length of infancy, find this difficult.

动物,一旦它们的后代能够自己照料自己,它们就不管了;但是人,由于抚养子女的时间长,是难以这样做的.

20.在我国,从二十年代开始从事翻译工作,从五十年代乃至八十年代还在讨论翻译问题的,大概只有两个人,一个是郭沫若,一个就是茅盾.