The painted murals in the Dunhuang Grottoes along the ancient Silk Road in China form the world's longest painted corridor, with a total of 45,000 square metres of painted murals.
《新英汉大辞典》
2
吃过午餐后,我走马观花地参观了龙门石窟。
After lunch, I managed a brief visit to the Longmen Grottoes.
3
卫生间看起来像一个明亮的石窟——自然的当代抽象艺术。
The toilet is expressed as a bright grotto - a contemporary abstraction of nature.