He will suffer from boasting and having no idea of his limitations.

他不知天高地厚口出狂言,一定会吃亏的.

Having no experience being screwed by a university, I have no idea what comes next.

没有经验，被拧了大学，我不知道下一步。

What would you say to a long-distance couple, having no idea when they're gonna see each other again?

你会对那些不知道什么时候会再见面的异地恋夫妻或情侣说些什么吗？

Hiragana were devloped by having a bunch of completely blind, deaf, and dumb Japanese people scribble things on pieces of paper while having no idea why they were doing so.

平假名是这样产生的：一群又瞎又聋又哑的日本人不知所以然的在纸上乱涂。

Sheila went on to say, “I hope it will inspire others to try, even if they are like I was: wanting to get rid of clutter but having no idea where to start.”

希拉接着说道：“我希望我的故事可以鼓励其他人也去尝试，即使他们像曾经的我一样：很想摆脱冗杂却又毫无头绪。”