Knock on wood.
敲木头。
英国谚语
Knock on wood.
敲木头。
Know the true value of time; snatch, seize, and enjoy every moment of it. No idleness, no laziness, no procrastination: never put off till tomorrow what you can do today.
知道时间的真正价值;抓住它，抓住它，享受它的每一刻。不要懒惰，不要懒惰，不要拖延:今天能做的事不要拖到明天。
Knowledge in youth is wisdom in age.
青年时的知识是老年时的智慧。
Lams catch flies but let hornets go free.
老鹰捉苍蝇，黄蜂不捉。
Last ship, best ship.
最后的船，最好的船。
Last, but not least.
最后，但并非最不重要。
Late children are early orphans.
晚生的孩子是早亡的孤儿。
Laugh before breakfast and you'll cry before lunch.
早餐前笑，午餐前哭。
Laugh till you cry, sorrow till you die.
笑到哭，痛到死。
Law cannot persuade where it cannot punish.
法律不能说服不能惩罚的人。
Law governs man, and reason the law.
法律管人，理性管法律。
Laws catch flies lets hornets go free.
法律捉苍蝇，黄蜂自由。
Laws catch flies, but let hornets go free.
法律捉苍蝇，黄蜂不受约束。
Learn to creep before you leap.
先学爬，再学跳。
Learn to say before you sing.
唱歌前要学会说。