...a beach of sand and shingle.是什么意思？

...a beach of sand and shingle.

碎石沙滩

beach

n. 海滩，海滨，岸上的沙子和卵石；vt. 将…拖上岸，将滑艇拖到小屋前面的岸边；

例句
Other people walk along the beach at night, so I didn't pay any attention at first...
入夜后还有人在沙滩上散步，起先我并没注意到。

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

sand

n. 沙，沙滩，沙色；vt. 撒沙于，用砂纸磨光；

例句
... the mile of white sand beach bordered by palm trees and tropical flowers
四周种有棕榈树和热带花卉的长达1英里的白色沙滩

and

conj. 和，与，而且，于是，然后，因此；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

shingle

n. 鹅卵石，木瓦板，小招

例句
On this beach there's too much shingle and not enough sand.
在这个海滩上,圆卵石太多,沙太少.