Compared with other animals, babies need to be cared for for for a longer period of time after birth.
和其它动物相比较，婴儿在出生以后，要有更长的一段霎时间需要别人的照顾。
直到被完全理解，过去才真正成为过去。
The function of entrepreneurs is to reform or revolutionize the pattern of production by exploiting an invention or, more generally, an untried technological possibility for producing a new commodity or producing an old one in a new way.
技术只是一个工具。真正起决定性作用的是使用它的人的创造力和想象力。