2012年大学英语六级听力常用习语(K类)' f; {, v9 O* ^3 C0 k
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keep an eye on小心,关注 2 G' d+ n% |" H0 [www.ExamW.CoM 0 j/ q& N1 I0 I. D3 | c keep in shape保持健康 - B# i _4 U7 w; {7 ^# Q7 A) O. I" o9 E3 Y' D C9 h' s! T
keep it between two of us这只是你我之间的事情 8 n3 j5 D: U2 J# U# j. i+ `. y0 W
kill two birds with one stone一石二鸟