swim bladder
n. 浮囊, 鱼鳔
例句与用法：
Let's go swimming.
咱们游泳去。
He was hot and tired and his head was swimming.
他又热又累，头直发晕。
She's teaching the children to swim.
她正在教孩子们游泳。
He can swim breaststroke, backstroke and crawl.
他会游蛙泳、仰泳和自由泳。
词形变化：
形容词: swimmable | 名词: swimmer | 动词过去式: swam | 动词过去分词: swum | 动词现在分词: swimming | 动词第三人称单数: swims |
ph.
浮囊; 鱼鳔