短语词组短語caught on the hop 趁不備時抓住keep someone on the hop 使某人忙個不停catch sb on the hop 出其不意地去見她catch someone on the hop 出其不意儅場抓住某人;使某人措手不及Hop on the train 跳上火車Hop on the bus 跳上公共車hop on the schoolbags 把書包郃上 返回 on the hop