adj.令人不安的；令人烦恼的
动词trouble的现在分词形式.
It was a sad, troubling message. 这是一个悲伤的，令人不安的消息。
He has a particular assistant to deal with the troubling visitors on behalf of him. 他有一个专门的助手代表他来处理那些令人烦恼的来访者。
This kind of environment is troubling if you need your investments to generate reliable cash flow. 如果你想让自己的投资创造可靠的现金流，那么这种环境是令人烦恼的。
