1) Little things amuse little minds. 小人无大志。
2) Look before you leap. 摸清情况再行动。
3) It is the first step that costs troublesome. 万事开头难。
4) It is the unforeseen that always happens. 天有不测风云，人有旦夕祸福。
5) It is too late to grieve when the chance is past. 坐失良机，后悔已迟。
6) It never rains but it pours. 不鸣则已，一鸣惊人。
7) Lookers-on see more than players. 当局者迷，旁观者清。
8) Learn not and know not. 不学无术。
9) Learn to walk before you run. 先学走，再学跑。
10) Learning makes a good man better and ill man worse. 好人越学越好，坏人越学越坏。
11) Let bygones be bygones. 过去的就让它过去吧。
12) Let sleeping dogs lie. 别惹麻烦。
13) Losers are always in the wrong. 胜者为王，败者为寇。
14) Lost time is never found again. 岁月既往，一去不回。
15) If you run after two hares, you will catch neither. 脚踏两条船，必定落空。
16) If you sell the cow, you sell her milk too. 杀鸡取卵。
17) If you venture nothing, you will have nothing. 不入虎穴，焉得虎子。
18) If you want knowledge, you must toil for it. 要想求知，就得吃苦。
19) Love at first sight. 一见钟情。
20) Kings have long arms. 普天之下，莫非王土。
21) knowing is not enough, we must apply; willing is not enough, we must do.仅仅知道是不够的，我们必须应用;仅仅愿意是不够的，我们必须行动。——bruce lee(李小龙)
22) Knowledge is power. 知识就是力量。
23) Knowledge makes humble, ignorance makes proud. 博学使人谦逊，无知使人骄傲。
24) Learn and live. 活着，为了学习。
25) It is easy to open a shop but hard to keep it always open. 创业容易守业难。
26) It is hard to please all. 众口难调。
27) It is never too old to learn. 活到老，学到老。
28) It is no use crying over spilt milk. 覆水难收。