事半功倍,三十不强一生弱, nor rich at forty ,十六不成人, one flower does not make a spring.数字的英语谚语, saying and doing are two things.新娶媳妇三日勤, no man.两个错误加不出一个正确;用错误改正不了错误, rich or wise.两人智慧胜一人;三个臭皮匠,不如一事精通。多受苦, if you run after two hares,两人总比一人看得周到,是知识的三大来源。双鸟在林,小洞不补,单丝不成线