If there is one -- which I take leave to doubt -- then it is older people who create it, not the young themselves.

如果这个问题存在的话 -- 请允许我对此持怀疑态度 -- 那么，这个问题是由老年人而不是青年人造成的。

where chance discoveries play a much larger part than they do in physical and mechancal industries.

同物理和机械工业相比，化学工业中偶然发现的机会要多得多。

In the contrary school, the duck is supreme.

与滑翔鸟相对的另一类鸟中，数野鸭本领最高。

In that first glorious hour, the mighty Vasa , which was intended to rule the Baltic,

就这样，想要统治波罗的海的大型战舰"瓦萨号，在它壮丽的起航时刻，

This shows how long it was before we deemed it necessary to make sure that all our children could share in the knowledge accumulated by the'happy few' during the past centuries.

这说明，经过了多么漫长的时间之后，我们才认识到，有必要确保我们的孩子享有多少个世纪以来由‘少数幸运者’所积累起来的知识。

becomes so worn and unreliable that it eventually is not worth mending.

磨损太厉害，老得一点儿也不准了，最终会不值得修理了。