And,if you are in a boat, keep your arms and legs out of the water.

VOA: special.2009.08.19

You need energy to move your arms around and move around mechanical systems, obviously, cars, boats, etcetera.

你需要能量,来移动胳膊和走动,机械系统，汽车，船等等。

麻省理工公开课 - 热力学与动力学课程节选

Rather, what happened is you heard English and--but the capacity grew in your head and something a lot more similar to the development of arms or legs or a visual system.

相反,你听到了英语,你脑中的英语能力得到增长,这个和手臂,下肢,或是视觉系统的发育很相似

耶鲁公开课 - 心理学导论课程节选

Put your arms around the victim's waist.

VOA: special.2009.08.11

In fact, certain areas of the skin would be impacted most, most dramatically, the face and the chest, the arms, but more distal point of the arms, like the palms of your hands.

事实上,皮肤某些区域将受到严重伤害,尤其触目惊心的是,在面部,胸部和手臂位置,很多都出现在手臂的末端,比如手掌上

耶鲁公开课 - 生物医学工程探索课程节选