Powered by twin propellers connected to a pedal belt, the mini-sub can reach speeds of 8 kilometers an hour and can reach depths of 6 meters.
由连接在脚踏带上的双螺旋桨提供动力，潜艇的时速可达到8公里，并能下潜至6米深。
Powerful battery-powered bicycles are crowding out their push-pedal brethren, delivering a jolt to the Bicycle Kingdom.
拥有电池强劲驱动的电动自行车正在将普通脚踏自行车挤出市场，改变了整个自行车王国的格局。
The FullBellyProject also has a pedal -powered sheller.
全民温饱计划还有一种是脚踏式的剥壳机。
The FullBellyProject also has a pedal -powered sheller.
全民温饱计划还有一种是脚踏式的剥壳机。
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