roundstone
释义与例句
n.
-
1.
Small stones used for paving.
不可数45,000 feet of edgestones have been set, and 27,571 yards of roundstone have been repaved; […]
词源
From round + stone.
来源：wiktionary
Small stones used for paving.
45,000 feet of edgestones have been set, and 27,571 yards of roundstone have been repaved; […]
From round + stone.
来源：wiktionary