九九文学吧关于difficult的知识
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![英文座右铭 nothing is difficult]( "英文座右铭 nothing is difficult")
英文座右铭 nothing is difficult
yesterdaywillnotbecalledagain.昨日不复来。witonceboughtisworthtwicetaught.由经验而得的智慧，胜于学习而得的智慧；一次亲身的体会，胜过两次的教师教导。tomorrowcomesnever.切莫依赖明天。timetriesall.时间检验一切...
