原级：backslide
现在分词：backsliding
过去分词：backslid; backslidden
过去式：backslid
1. But after a couple of weeks, he backslides and starts puffing away again. 可是，在美国人当中，体重超重的人也确实不少。
2. But after a ccoupe of weeks, he backslides and starts puffing away again. 例句