keep back是什么意思中文翻译

　　She tried to keep back her indignation.

　　她试图抑制住她的愤怒。

　　No one can keep back the wheel of history.

　　没人能阻止历史车轮的前进。

　　But the fire could not keep back the policemen.

　　但火焰不能阻挡警察们的步伐。