单词	nonessential amino acid
释义	nonessential amino acid noun : any of various amino acids that are required for normal health and growth, that can be synthesized within the body or derived in the body from essential amino acids, and that include alanine, asparagine, aspartic acid, cystine, glutamic acid, glutamine, glycine, proline, serine, and tyrosine compare essential amino acid Example Sentences Recent Examples on the Web L-Theanine is a nonessential amino acid that promotes relaxation and attention. The Salt Lake Tribune, 25 May 2022 Word History First Known Use 1952, in the meaning defined above Medical Definition nonessential amino acid noun : any of various amino acids that are required for normal health and growth, which can be synthesized within the body or derived in the body from essential amino acids, and which include alanine, asparagine, aspartic acid, cysteine, glutamic acid, glutamine, glycine, proline, serine, and tyrosine compare essential amino acid
随便看	roping off ropings ropy ropy lava roque Roquefort roqueforts roquelaure roquelaures roques roquet roqueted roqueting roquets roquette roquettes ror ror bre Roraima roral roram hat Rorate Sunday rores roric rorid

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。