英语翻译no one can really claim to know politics properly until

一个从没有熬过夜的人,是不能宣称自己很懂政治的.
请注意这里熬夜用了完成时,指的是有过熬夜的经历.也就是说,只有辛勤的付出与学习,才能知道什么是真正的政治.
这句话后面还有一句话,看了就更明白了：
No one can really claim to know politics properly until he has stayed up all night,writing a speech for delivery the following day.