The particulates have more acidic pollutants with strong acidity and have the corrodibility to grottoes.

细粒中有较多酸性污染物并比粗粒酸性强,这些细粒对石窟有侵蚀作用。

We reached a beautiful grotto, whose entrance was almost hiden by the vine.

我们到达了一个美丽洞穴,洞进口几乎被藤蔓遮掩著。

The development of technology and improvement of test methods are the hopes for solving the periodization of grottoes.

科学技展、科学测定方法进步和完善，是解决石窟分期问题希望所在。

Flying acrobats and a lone beribboned female dancer recalled the grottos of Dunhuang, painted in the Wei and Tang dynasties when camel caravans plied the Silk Road.

飞天（他们叫做会飞杂技演员……）和一个穿丝绸独舞女性舞蹈演员展示了墩煌壁画，它绘画于魏唐朝代，当骆驼运载着货物通过丝绸之路。