English Idioms About “Weather”
Idiom: Chase rainbows
Meaning: This idiom is used when someone tries to pursue unrealistic or fanciful goals, things that are impossible.
Example: He thought he could convince the boss to appoint him as the new manager, but in fact he was chasing rainbows.

English Idioms About “War”
Idiom: Fight fire with fire
Meaning: If you fight fire with fire, you use the same methods and tactics that your opponent is using against you. Shakespeare referred to the same meaning in King John, 1595: Be stirring as the time; be fire with fire; Threaten the threatener and outface the brow Of bragging horror
Example: After the competitive offers from rival firms, our company has decided to fight fire with fire and reduce prices.

English Idioms About “General”
Idiom: Say your piece
Meaning: Tell what you have to say
Example: Stop annoying us. Say your piece and go.

English Idioms About “Work”
Idiom: Dirty work
Meaning: (Also do the dirty work) unpleasant work or dishonest action.
Example: 1. I don’t know but I feel there is some dirty work going on in this company. 2. I always have to do the dirty work. I never have fun.