一辆公交车,在这座城市里行驶着。车上一位名叫汤姆森的乘客突然发现兜里的钱包不见了,马上告诉司机。司机一边开车一边问:“什么时候丢的?”“刚刚发现。”汤姆森说,“不过我也是刚上车,上车以后还买票了呢。买票的时候钱包还在呢……” A bus traveling in the city. A passenger named Thomson in the car suddenly found his wallet missing, and immediately told the driver. When driving, he asked: “When did you lose?” “Just discovered.” “Thomson said,” but I just got on the train and bought tickets after getting on the bus. here I am……"