keep an eye on 留意,照看
keep in mind 记住
keep one's head 保持镇静
keep one's word 守信用
keep pace(with) (与……)齐步前进
lead the way 引路,带路
learn by heart 记住,背诵
leave alone 不打扰,不干预
let alone 更别提,不打扰
let go (of) 放,松手
lose heart 失去勇气,丧失信心
lose one's head 慌乱,仓皇失措
lose one's temper 发脾气,发努
lose sight of 忘记,忽略;看不见
make a /the difference 有影响,起作用
make friends 交朋友
make fun of 取笑,嘲弄
make one's way 去,前往
make sense 讲得通,言之有理
make sure 查明;务必
make the best of 充分利用