It was a plain, grey stone house.

这是一座简朴的灰色石头房子。

《柯林斯英汉双解大词典》

Bael, wood apple or stone apple is a species native to India, but found throughout Southeast Asia. Bael is a smooth fruit with a woody peel that is colored yellow, green or grey.

印度枳又称木苹果或石苹果，树种原产于印度，但现已经遍布整个东南亚。

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Inside, material contrasts continue. expressed through sharp-edged geometries and articulated datum, juxtapositions of white stucco, grey stone, and soft, warm wood surfaces unfold throughout.

建筑内部则继续延续了材料的对比，锐利的几何形体映衬铰接的基点，白色粉刷墙面、灰色石材对比着铺展开的柔软温暖的木材表面。

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The lines of grey stone, the birdsong, the stillness, the lengthening shadows were still a refuge.

BBC: Following the Silk Road to the end of China

We soon passed a damaged, burned-out, grey stone shrine, the cause of much tension even today.

BBC: Part II: The road to Bethlehem

Down the old, cold grey stone steps to the antiquated bookshop that lends the establishment its name, I found clues to the area's most charismatic corners.

BBC: A tale of two Berlins