Run up at a constant pace for up to 45 seconds, then jog back down and repeat four more times.
跑上山时的步子要保持不变，大约在45秒钟以上，然后再慢跑下山，这样重复跑四次以上。
Middle-aged folks work out in gyms and jog down the street, trying to delay the effects of age.
而中年人则在体育馆里锻炼，在马路上慢跑，尽量不让岁月过早地留下痕迹。
Safety designed, using both hands to operate, with emergency stop button and jog up and down function.
安全设计周全，双手操作，设有紧急停止按钮及上下点动功能。
Safety design, using both hands to operate, with mergency stop and jog up and down function.
安全设计，采用双手操作，设有急停和上下点动功能。
Safety design, using both hands to operate, with emergency stop button and jog up and down function.
安全设计周全，采用双手操作，设有急停和上下点动功能。
Safety designed, using both hands to operate, with emergency stop button jog up down function.
安全设计，采用双手操作，设有紧急停止按钮及上下点动功能。
Safety designed, using both hands to operate, with emergency stop button and jog up and down function.
安全设计，采用双手操作，设有紧急停止按钮及上下点动功能。
Safety designed, using both hands to operate, with emergency stop button and jog up and down function.
安全设计，采用双手操作，设有紧急停止按钮及上下点动功能。
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