Well, the figure I saw last was a number too small to be mentioned; I mean, to say you just can't really say how much it is, but all right, two percent.

这个数字简直,小的可忽略了,我的意思是说你实在说不出精确地数字,但实际上只有2%左右

耶鲁公开课 - 古希腊历史简介课程节选

That - irreversible changes happen all the time too but here I'm talking about very subtle small changes where you're changing the structure of the protein but only a little bit such that it can go back.

这种不可逆的改变时时刻刻都在发生,但我在这里想讲的是,对蛋白质结构进行微小的改变,小到这种改变是可逆的

耶鲁公开课 - 生物医学工程探索课程节选