游泳存活时间
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swimming survival time
游泳生存时间
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Two main problems have existed for a long time in the elementary swimming teaching in our country. First, swimming as a survival skill has not been popularized among school age people;
我国初学游泳教学一直存在两个问题：游泳作为一项人人必备的生存技能在学龄人群中还不够普及；
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