甘肃有着大量珍贵的历史文物和遗迹，由于历史原因和各种条件的制约，文物工作存在的困难和问题较多。
There are a large number of historical vestiges and cultural relics in Gansu, but because of various reasons, there are also many problems and difficulties with regard to the archaeological work.
但到了现代，由于各种原因，许多工艺已经退出历史主流舞台，取而代之的是更适合现代社会的金属表面工艺。
But modern times, many technics have quit the mainstream stage of history for various reasons, and are replaced by metal surface technics that will adapt to contemporary society.
但由于各种历史和社会的原因，港口群重复建设和同质化竞争逐渐严重。
However, the repeated construction of harbor groups and the homogeneous competition become more serious due to various social and historical factors.
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