to use a method of choosing somebody/something that involves putting a number folded pieces of paper in a bag, one of them with a mark on it. People then take it in turns to take a piece of paper from the bag and the one who takes the paper with the mark on it is chosen.抽签（选定）；抓阄（决定）
They drew lots for the right to go first.他们拈阄儿决定谁先走。