| 11. | In all the less controversial fields, like the study of cacti or termites or the mature of nebulae, the necessary method of study is to group the relevant material and to take note of all possible variant forms and conditions. |
| 在一切争议较小的领域里，如对仙人掌、白议或星云性质的研究，应采取的研究方法是。把有关各方面的材料汇集起来，同时注意任何可能出现的异常情况和条件
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| 12. | It begins as a childlike interest in the grand spectacle and exciting event; it grows as a mature interest in the variety and complexity of the drama, the splendid achievements and terrible failures; it ends as deep sense of the mystery of man's life of all the dead, great and obscure, who once walked the earth, and of wonderful and awful possibilities of being a human being. |
| 们对历史的爱好起源于我们最初仅对一些历史上的宏伟场面和激动人心的事件感到孩童般的兴趣; 其后, 这种爱好变得成熟起来, 我们开始对历史这出“戏剧”的多样性和复杂性, 对历史上的辉煌成就和悲壮失败也感兴趣; 对历史的爱好, 最终以我们对人类生命的一种深沉的神秘感而告结束。 对死去的, 无论是伟大与平凡, 所有在这个地球上走过而已逝的人，都有能取得伟大奇迹或制造可怕事件的潜力。
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| 13. | You have heard it repeated that men of science work by means of induction and deduction, that by the help of these operations, they, in a sort of sense, manage to extract from mature certain matural laws, and that out of these, by some special skill of their own, they build up their theories. |
| 你们多次听说过，科学家是用归纳法和演绎法工作的，他们用这种方法，在某种意义上说，力求从自然界找出某种自然规律，然后他们根据这些规律，用自己的某种非同一般的本领，建立起他们的理论。
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| 14. | the rich bouquet of mature brandy |
| 酿熟的白兰地的醇厚香味
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| 15. | a mature person, oak, starling |
| 成熟的人, 橡树, 椋鸟
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| 16. | after mature consideration |
| 经过审慎考虑
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| 17. | mould a child into a mature adult |
| 把孩子造就为成熟的成年人
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| 18. | mature artists |
| 成熟的艺术家
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| 19. | mature artist |
| 成熟的艺术家
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| 20. | a man of mature age |
| 成年男子
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