The relationship between education and earnings is complex and varies across different contexts.
古代著书立说的人,都有卓越的见解而自成一家,后世无法轻易改变。
世界上充满了人,挤满了这些奇迹,以至于它们变得平凡,我们忘记了它们。
The dog is called Sandy. I like Sandy. He is not clever but he is very cheerful.