逐步发展

The British present political system has evolved over several centuries.

英国的现行政治制度经过几个世纪逐步发展而成的。

Urban disaster science is a new discipline having been uprisen with theindustrial development.

城市灾害门随着工业化发展而逐步产生的门新。

Etesian Qingdao interenational seawater desalination conference had broad influence and famousness,and it becomes a famous international conference brand step by step in China.

这年次的青岛海水淡化国际会议在业有很大的影响力和知名度，逐步发展成中国的个知名的国际会议品牌。