每日谚语
seek blood from stone (向石头求血)缘木求鱼
To do something that is very hard to accomplish, especially when dealing with other people in some way. 做一些很难完成的事,特指和别人打交道
例句:Getting a group of toddlers to sit still—it's like getting blood out of a stone.
让一群幼童坐定就好似缘木求鱼。