swam释义:v. 游泳,漂浮浸泡仿佛旋转,眩晕(swim 的过去式)例句:The boys swam across the lake.男孩子们游到了湖对岸。词组:in the swim合时髦合潮流熟悉内情积极参加活动sink or swim成败全靠自己have a swim游泳swum释义:v. 游泳(swim 的过去分词)例句:Have you swum in the Black Sea?你们在黑海中游泳了吗