swim的ing形式是swimming。swimming的意思是游泳，游泳运动。swimming的例句It had been two years since I had been to the swimming baths（我已经有两年没去过室内游泳馆了）。
swimming的例句Swimming is probably the best form of exercise you can get（游泳或许是现有的最佳锻炼方式）；There was swimming and sailing down on the lake（有人在湖上游泳和扬帆）。
