Ponder on sth (phrasal verb)
●To think carefully on something.（思考，考慮）
1.I need to ponder on this.
2.The Prime Minister pondered on when to go to the polls.
●The quality or state of being general rather than specific or detailed（一般性，概括，空泛）
1.We need to get away from generalities and focus on the issues.
2.Politicians speak in generalities -- they want to cut the deficit and keep taxes low, etc., but they don't want to tell you exactly how they will do that.
Not to mention (idiom)
●Used when you want to emphasize something that you are adding to a list.
1.He's one of the kindest and most intelligent, not to mention handsome, men I know.
2.We were served a sumptuous entree, not to mention the other courses.
Impact on sb/sth (phrasal verb)
●To have an effect on someone or something.
1.High interest rates have impacted on retail spending.
2.This plant closing will impact upon the local economy for years to come.
Be prone to sth/do sth (idiom)
●Likely to [do] something; apt to have something.
1.We are creatures prone to go to extremes: like the pendulum of a clock in motion, we swing from one side to the other.
2.He is rather prone to making tactless remarks.