精 1精 21. 我们必须铭记除了努力工作，成功没有秘诀。 It must be kept in mind that there is no secret of success but hard work. 2. 我们从这件事可以看到在这世上没有什么困难是我们无法克服的。 It can be seen from this that there is no difficulty in the world we cant overcome.精 33. 只有当我们用知识武装自己时，我们才能在这个世界上立于不败之地。 Only when we are armed with enough knowledge can we stand out in the world.4. 毫无疑问，如果你用心了，你就一定能够达成目标。 There is no doubt that you are sure to achieve your goals if you put your heart into it. 精 45. 老实说，我们犯的错误本来都是可以避免的。 To tell the truth, many
