There were several dozers in the corners of the library.

dozers 是名词 dozer 的复数形式，dozer 来自动词 doze（打瞌睡）加后缀 -er 构成，原指"打瞌睡的人"。在工程机械领域，dozer 特指"推土机"，因为早期推土机操作员常在驾驶室里打盹而得名。