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keepin,keepon和keepout的联系与区别求大神帮助

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keep in ,keep on和keep out的联系与区别求大神帮助
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答案和解析
keep in 有抑制,闭门不出,让火不熄的意思,例如Keep in mind that you have to be ...keep on 表示反复地做,继续进行She kept on working although she was tired.keep out 有不许入内,挡在外面的意思,EX:keep out the cold 但是他们又都有保持某种状态的意思