Methods E-Echo was performed in 44 patients with pacemakers. All patients underwent supine bicycle exercise tests in fixed-rate and adaptive pacing mode.

方法对4 4例植入频率适应性起搏器的患者行运动负荷超声检查，分别于非频率适应和频率适应两种起搏状态时进行仰卧位踏车实验。

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These days, the average office worker receives more than 200 messages a day via snail mail, e-mail, express mail, cell phone, landline, wireless Web, bicycle messenger, singing telegram, you name it.

如今，一位办公室人员每天通过“蜗牛”信（普信）、电子信、快递信、手机、电话、无线网络、信使、电报等收到的信息超过200条。

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Just as the invention of automobile didn't put an end to the history of bicycle, traditional books will by no means be replaced by E-books. (25ws)

正如汽车的发明并没结束自行车的历史一样，传统图书也绝对不会被电子图书取代。

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Teens design pedal-powered filtration system: High-schoolers Payton Karr and Kiona Elliot , from Oakland Park, Florida , led a team of inventors who designed a collapsible, transportable, bicycle-powered emergency water-sanitation station that filters E. coli and other harmful pathogens from contaminated water.

WHITEHOUSE: The White House