1、set a limit to:为xx设置一个限制/极限。2、the limit of:xx的极限。3、without limit:没有限制,无极限。4、limit sth to:将某物限制在xx范围内。她知道自己的权限 She knows her limit.我为了减肥,限定自己每天摄入1000卡的热量。In order to lose weight, I limit my daily intake of calories to 1000.