n.一种雕塑技法(在制作大的作品时；在选定的部位采取逐步斜陷的办法以增强明暗效果；为罗丹所首创)
动词hollow的现在分词形式.
She held the small bird in the hollow of her hand. 她把那小鸟握在掌心里。
This tree looks high and strong but actually its trunk is hollow. 这棵树看起来又高又壮，实际上树干是空的。
