什么是 overturn?To cause to turn over or capsize; upset.To cause the ruin or destruction of; overthrow. See Synonyms at overthrow.Law To invalidate or reverse (a decision) by legal means: "his continuing legal battles to overturn a draft-evasion conviction” ( Robert Lipsyte). To turn over or capsize.The act or process of overturning.The state of having been overturned.