很久以来我就在思考一个问题 ,有时觉得已经明白了 ,而且还写过文章 ;但当新的情况接踵而至 ,甚至以一种顽症的现象烦扰我时 ,又觉得明白得大大不够 ,还是要仔细琢磨下去。这到底是什么问题 ,竟然那么纠缠不清 ,使人无法熟视无睹 ?其实说复杂又复杂 ,说简单又相当简单 ,但究竟 I have been thinking of a problem for a long time and I sometimes feel that I already understand it and I have written articles. However, when new situations come one after another and even bother me with a chronic illness, I still feel that I have not understood enough. Carefully pondering it. In the end what is the problem, even so tangled, people can not turn a blind eye? In fact, complicated and complex, that simple and fairly simple, but after all