Lock horns  冲突 较劲Abigail wanted to settle the dispute peacefully, and didn't want her room mates locking horns.Nathan locked horns with his uncle on the issue of gun control.Maria locked horns with Kelly on what the company's advertisement should contain.Definition: Get into an argument with someone.Etymology: This expression alludes to how stags and bulls use their horns to fight one another.******冲突 较劲The most scary thing for a child to watch is to see his or her parents locking horns over trivial things. 孩子最害怕看到父母因琐事冲突.Instead of locking horns, the two scientists decided to forget about their old scars and cooperate on a new project. 两位科学家不再较劲,决定忘掉过去,在新的项目上进行合作.xxxxxxxxxChickens come home to roost 遭报应 Sara did the bare minimum for her pilot training program since she expected her father to pull strings for her. However the chickens came home to roost when she flunked out. The chickens came home to roost for the boy who cried wolfThe chickens came home to roost for the board members of Enron who shut off California power plants on the hottest days to increase the price of energy.Definition: You have to face the consequences of your mistakes or bad deeds.Etymology: The fact that chickens usually come home to rest and sleep has long been known, but the idea was used figuratively only in 1809. It began when Robert Southey wrote, "Curses are like young chickens, they always come home to roost."******遭报应 How I wish the chickens will come home to roost for those evil people who commit so many crimes!我希望那些罪犯遭报应.The chickens finally came home to roost when the murderer was recognized by people at a public venue in a foreign country. He was arrested 20 years after he killed his best friend for money.20年后杀人犯遭报应,在国外被认出,为了钱财他杀了他最好的朋友.