释义:看见一片落叶,就知道一年内的时间将要到头了。通过细微的迹象,可以预料到整个形势的发展趋向与结果。
The strength of a political system lies in its ability to adapt to changing circumstances and to incorporate new ideas and practices.
实验室里的每一次失败都是迈向成功的一步。