用“ring upon ring”造句大全，ring upon ring造句
In the well-differentiated astrocytoma showed structure of ring upon ring, the inner ring was the basement membrane of blood vessel, while the outer ring was the glial membrane.
It is besieged ring upon ring by the people of the whole world.
The enemy was surrounded ring upon ring.
Concubines, a unique female school in the society of polygamy, endure cultural oppression ring upon ring.
Dimples diffuse annularly on the surface of water. The shadows of leaves and flowers with the lipper undulate, ring upon ring.
