If you want a really lightweight shoe, you should buy a high-quality running shoe.

如果你想要很轻的鞋子，就要买高级的跑鞋。

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If you want a really lightweight shoe, you should buy a high-quality running shoe.

也许你想买的是跑类的鞋子，不是真的跑鞋。

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It was designed as a high performance running shoe for use on track, road or trail.

这是一双设计为在跑道、公路或者小路上使用的高性能跑鞋。

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If you are a runner who wants to push yourself harder, there's a new high-tech running aid on the market that's built in to your shoe.

NPR: Go the Distance with a Well-Fitted or High-Tech Shoe