虾青素分子结构中含有13个共轭双键, 是一种极不稳定的类胡萝卜素.Astaxanthin molecular structure which contains 13 conjugated double bonds, is one kind of extremely unsteady carotenoid.综述了近10年来虾青素结构、功能及应用方面的研究成果与进展.This article reviews the research pro...
他是个经验丰富的跳伞者,已经跳过150多次伞了。He was an experienced parachutist who had done over 150 jumps.里德不得不从严重受损的飞机上跳伞逃生。Reid was forced to bail out of the crippled aircraft.一位大胆鲁莽的跳伞者今天从伦敦塔桥的桥顶跳了下去。A daredevil parachutist jumped from t...
大多数孩子既不是天才也不是明星,他们只是表现平平。Most children are not geniuses or stars. They just do averagely well.天才通常都被认为行为古怪而且毫无实践能力。Geniuses are supposed to be eccentric and hopelessly impractical.天才往往在离开人世之后才得到认可。Often a genius is recog...