Both of them had the ability to present complex matters lucidly.
两人都具有深入浅出地表述复杂事物的能力。
lucidity
His writings were marked by an extraordinary lucidity and elegance of style.
他的作品简洁明晰,文风典雅。
2ADJ-GRADED (病后或糊涂过后)清醒的,头脑清楚的,思路清晰的 If someone is lucid, they are thinking clearly again after a period of illness or confusion. (病后或糊涂过后)清醒的,头脑清楚的,思路清晰的 [formal]
He wasn't very lucid, he didn't quite know where he was.