The historical development of mankind has been such that the most diverse races have contributed to the civilization we now possess.
人类的历史发展表明，最多样化的种族对我们现在所拥有的文明做出了贡献。
在科学中，创造力和技术技能同样重要。
Speech is the shadow of action; action is the manifestation of speech.
I suppose when they reach a certain age some men are afraid to grow up. It seems the older the men get, the younger their new wives get.