短语词组短语catch up on sth 补上某事;补做catch catch on 理解catch be on fire 失火catch sb on sth 我的袖子被钉子挂住了catch something on film 用相机拍下某物catch you on Monday 周一见to catch up on 赶上catch h on wheel 挡轮器Catch It On Time 准时赶上;把握时机;按时捕获 返回 catch on