swim的现在分词 swimming；
swim
v. 游水;游泳;游泳(作为娱乐);游;游动；
n. 游泳；
过去式 swam过去分词 swum
Swimming is a good form of exercise.
游泳是很好的锻炼方式。
How long will it take her to swim the Channel?
她游过英吉利海峡得用多长时间？
The new students were just left to sink or swim.
学校完全让新生自生自灭。
The main course was swimming in oil.
主菜油汪汪的。
