3. 游泳势必要进行一连数小时的艰苦训练的翻译：3. swimming is bound to be carried for several hours of hard training 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

3 is bound to be swimming for hours of hard training

3. swimming is bound to be carried for several hours of hard training

3. As soon as the swimming will have to carry on inevitably links several hour difficult trainings

正在翻译，请等待...

3. swimming is bound to be carried for several hours of hard training