be slack at the beginning and have to speed up towards the end ❍ 他每干一项工作总是～。Whenever he tackles a job,he is slack at the beginning and has to speed up towards the end.
前松后紧
be slack at the start and have to work extra hard towards the end
前松后紧qián sōnɡ hòu jǐn
比喻开始抓得紧，到结束时放得很松。be slack at the beginning and have to speed up towards the end