to flesh sth out or to flesh out sth
+ story, plan充实；加细节于；使丰满
He talked with him for an hour and a half, fleshing out the details of his original five-minute account.他和他谈了一个半小时, 将原计划5分钟的叙述完全展开了。
The plan is good, but it needs fleshing out a bit.这项计划很好, 但需要充实一下。