What is the best, most convenient and least expensive exercise for most individuals? One involving some intensity. Walking is good; running is better.
对大多数人而言，最好，最方便和最便宜的运动是什么？一种包括一些强度的运动。步行不错；跑步更胜一筹。
The walking elevator has the function of extending the step width, strengthens the flexibility and the extensibility of the walking elevator, and is convenient to use for the user.
本实用新型的手扶电梯，具有可扩展阶梯宽度功能，增强了手扶电梯的灵活性和可扩充性，方便用户使用手扶电梯。
The inner heel can be shrunk or be extended according to needs, thereby the shoes can form high-heel and flat-heel dual-purpose shoes to be convenient for wearing and walking.
本发明所设内后跟可以随时根据需要收进或放出，即可使鞋子形成高跟和平跟两用鞋子，使穿用行走更为方便。
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