scratching_-_giving_有道手机词典

1.Such a task meant giving a TV, for example, a way to identify people sitting on a couch and to recognize a certain hand wave as a command and not a scratching of the nose.
例如，对电视来说，就需要识别坐在沙发上的人，识别作为命令的手势，防止把观众挠鼻子的小动作误认为手势命令。
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2.A free-range hen scratching around might lay one or two eggs a week. Feeding her costs nothing, giving a net gain of 50-100 eggs a year.
散养的鸡四处抛食，一个星期可以下1-2个蛋，饲料成本为零，一年可以净得50—100个鸡蛋。
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