分类：教育/科学-外语学习
问题：帮忙理解~Hisegoknewnobounds. 
His ego knew no bounds.
回答：查到了know的用法的一个例句:
"When his wish to go to Harvard was realized, his joy knew no measure."
"当他进入哈佛大学学习的志愿实现时,他高兴极了。"

这儿knew的用法似乎类似.

His ego knew no bounds.
他实在是太自我主义了.
(或太自私了,太自负了)