A second possibility, for more power-hungry devices, is to fire a finely focused infrared laser beam at a photovoltaic cell, which converts the beam back to electrical energy.
第二种可能性则能应用在更加耗电的设备上。其原理是发射一道精确聚焦的红外激光线，击中光伏电池，由此能够将光束转换回电能。
With the same high-spirited eagerness, and a flask full of local fire-water, he would run into taverns, caves, shepherd huts and gypsy camps, hungry to pick up the unknown language and join in.
带着如此强烈的求知欲，装了当地水的携带瓶，他会跑去酒馆、洞穴、牧羊人的家、吉普赛人的营地，求知若渴地学习当地的语言，并加入他们。
The women crouched by the fire, the wet smoke in their eyes; the children wailed; everybody was hungry.
只见女人蜷缩在火堆旁，烟雾浸湿双眼；又闻孩子饿得哭个不停，人人肚子饿得直叫。 直到某天晚上，他们听见山里有人在呼喊、狗在嚎叫。
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