eventually wore hollows in the stone steps.
最终在石阶上
洞
eventually wore hollows in the stone steps.
最终在石阶上洞
The receding tide pooled in hollows along the shore.
潮水退去后留下的小水洼
marble steps with hollows worn by footsteps. Acavity is a hollow or hollow area within a solid body or object:
大理石阶梯有人走的脚印。 Cavity 指固
或事物内部的凹洞：
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