Of course, you can do jumping jacks, crunches and other simple exercises without any equipment at all.
当然，你也可以做杰克跳、仰卧起坐等不需要任何器材的简单锻炼。
Unlike most other USB modems, the 250U has jacks to connect an external antenna for better reception.
与其他的USB调制解调器不同，250U集成了天线以获得更好的接收效果。
The mains switch is located on the rear cover along with the ac inlet, all the other knobs and jacks are on the front.
电源开关位于后盖一起交流入口，所有其他的旋钮和插孔都在前线。
The mains switch is located on the rear cover along with the ac inlet, all the other knobs and jacks are on the front.
电源开关位于后盖一起交流入口，所有其他的旋钮和插孔都在前线。
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