敏捷的头脑
a keen mind
喜爱,热衷于
be keen on
远离,避开
keep away from
阻止;隐瞒
keep back
连续不断做某事
keep doing sth
阻止某人做某事
keep sb from doing
prevent/stop sb from doing
记住,牢记
keep …in mind
使…远离,不让…靠近
keep …off
继续做某事
keep on doing sth
遵守承诺
keep one’s promise
不让…进入,遮挡
keep …out
遵守;保持
keep to doing sth
跟上
keep up with
…的钥匙,关键
the key to sth
消磨时间
kill time
有一点
kind of
跪着
be on one’s knees
撞倒
knock down
击倒
knock out
听说,了解
know about
作为…而出名
be (well) known as
因…而出名
be (well) known for
为…所熟知
be (well) known to
通晓,熟悉
have a good knowledge of