swim的过去时是：swum；过去分词是：swam；第三人称单数现在时是：swims；现在分词是：swimming。
含义
英[swɪm] 美[swɪm]
v.游泳
n.游泳
例句
1.She swam the 400 metres medley ten seconds slower than she did in 1980.
她400米混合泳的成绩比其1980年慢了10秒。
2.The barriers are lethal to fish trying to swim upstream.
这些障碍物对于想要往上游游动的鱼儿来说是致命的。
3.Alexis suddenly could take no more: he felt too hot, he couldn't breathe, the room swam.
亚历克西斯突然觉得受不了了，他感到闷热，喘不上气，仿佛整间屋子在旋转。
4.The musty aroma of incense made her head swim.
熏香发霉的气味令她感到头晕。
5.He polished off a large steak, salad, broccoli swimming in thick sauce, and half a litre of wine.
他狼吞虎咽地吃下了一大块牛排、很多色拉和浸着浓稠酱汁的花耶菜，还喝了半升红酒。
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