The best alternatives are water running, elliptical training, bicycling, and inline skating, because they closely simulate the action and demands of running.

最好的替代方式是水中跑步、椭圆机训练、自行车和直线轮滑，因为这些都能近似模拟跑步的动作和需求。

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Only minimal training is required and no external power, electricity, equipment, clean water, or sterile environment is needed.

它只需简单培训，又无需外部能量、电、设备、干净的水或无菌环境。

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She says it also will pay for shelter for homeless families, clean water and training to upgrade skills for people without jobs.

VOA: standard.2009.09.13

According to the most recent National Survey of Recreation and the Environment by the federal government, approximately 17% of Americans had ever participated in some sort of paddle-sport activity, yet only 28% of those had any sort of on-water training session.

WSJ: City Kayak Tours Fan Safety Worries

Mr Doyle said the group wanted to retain and renovate the outdoor pools and also establish the lido as a water sports training centre.

BBC: Saltdean Lido

Officers from English forces, who will be deployed at the summit in Enniskillen, are currently being given water cannon awareness training but they will not be operating them.

BBC: Police water cannon being considered by Theresa May