...the plaintive call of a whale.鲸的哀鸣They lay on the firm sands, listening to the plaintive cry of the seagulls.他们躺在硬实的沙地上，听着海鸥的哀鸣。Her voice was small and plaintive.她的声音微弱而哀伤。the bird’s plaintive call鸟儿哀伤的叫声They lay on t...
Suddenly a camel let out a plaintive ay, not far away.骆驼忽然哀叫了两声, 离他不远.They lay on the firm sands, listening to the plaintive cry of the seagulls.他们躺在硬实的沙地上，听着海鸥的哀鸣。Her voice was small and plaintive.她的声音微弱而哀伤。...
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...
这布花是用一种特殊的粘合剂固定住的.The cloth flower snaps on with a special binder.较好的配方是那些高硝基增塑的硝化棉粘合剂配方.The preferred compositions are the highly nitroplasticized nitrocellulose binder compositions.制造推进剂的最后操作是粘合剂的固化.The final operation...