coherent
/ˌkəuˈhɪərənt; ko`hɪrənt/ adj
(of ideas, thoughts, speech, reasoning, etc) connected logically or consistent; easy to understand; clear （指看法、 思想、 言语、 推理等）有条理的, 前後一致的, 易懂的, 清楚的
a coherent analysis, argument, description, etc 前後一致的分析、 论证、 描述等
The Government lacks a coherent economic policy. 政府的经济政策缺乏一致性.
He's not very coherent on the telephone. 他打电话时语无伦次.