例句與造句

1. Although one can find diorite art from later periods, it became more popular as a structural stone and was frequently used as pavement due to its durability.
2. The orthostats and structural stones of the monuments tend to be from local green gritstone, which was soft enough to carve, but which is also vulnerable to vandalism.
3. The first has structural stone walls and a roof made up by piling up stone blocks; and the second is a wooden structure around which stone is placed for fire protection.
4. It's difficult to find structural stone in a sentence. 用structural stone造句挺難的