◊ To jump/leap to conclusions is to make judgments too quickly before knowing all the facts.匆忙下结论；贸然断定
The evidence suggests that he's to blame, but let's be careful not to jump to conclusions. He may have a good explanation for what happened.证据表明他应负有责任，但我们还是要谨慎一点，不要贸然下结论。他对于所发生的事情也许会有一个合理解释。
We should hear his explanation before we jump to the conclusion that he's to blame.我们应该先听听他的解释，不要过早判定他有过失。