pace /peis/ I. n.［c］1.(一)步(距离) (同step): Walk ten paces forward.向前走十步。2.步速(仅用于sing.，常加不定冠词): He walked at a fast pace.他用快速走。［考句］ Many people complain of the rapid pace of modern life. 许多人抱怨现代生活节奏很快。 3.用于习语keep pace with 同…并驾齐驱：［考句］In a time of social reform, people’s state of mind tends to keep pace with the rapid changes of society.在社会变革时期人们的思想状态趋向于和社会的发展变化同步。set the pace树榜样（见set条）‖II.vi.踱步： pace up and down the room 在房间里来回走着