It was properly powered,randomized and placebo-controlled and really provides evidence for the use of oxygen in cluster headaches,"

VOA: standard.2009.12.17

It's a gene that's on the plasmid, and this particular gene confers a specific biological property to cells that have the plasmid and can use it properly.

它是质粒自带的基因,如果细胞能够获得这种质粒,并正确的利用它的话,这段基因就能赋予该细胞某种生物学特性

耶鲁公开课 - 生物医学工程探索课程节选

To figure out even what this thing is, let alone how to use it properly. So, you know, I'm sympathetic.

就连认出这是什么东西（都很困难），更别说正确应用它了，所以我很同情这点。

经常犯的失误 - SpeakingMax英语口语达人

and say, "You've not checked it properly. We are in England, use the English language."

然后说，“你没有正确地检查它，我们在英国，请用英式英语。”

美式英语和英式英语 - SpeakingMax英语口语达人