This provides a forward movement, known as thrust.
这提供了一个向前的运动,称为推力。
He suggests using electric motors or shape-memory materials to repeatedly flick the end of a flexible, wedge-shaped wing, creating a wave that ripples backwards and generates forward thrust.
他建议采用电动机或者有形状记忆功能的材料来反复击打软体契形翅膀的末端,让水产生向后的涟漪从而获得向前的推力。
Suarez frowned, thrust her hands forward in a "stop" motion and then pointed to a red light as a motorcyclist raced toward a crosswalk filled with pedestrians.
一辆摩车托直奔人行横道而来,司机似乎准备冲进熙熙攘攘过街的人群,奈笛看见了,她皱皱眉,猛地伸出双手向司机示意一个“停”的动作,然后指了指红灯。
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