There are many amino acids that the body cannot synthesise itself.有许多种氨基酸人体自身不能合成.There are many amino acids that the body cannot synthesize itself.有许多种氨基酸人体自身不能合成。Alanine appears to be the preferred amino acid in the tr...
I see myself, first and foremost, as a working artist.我首先还是把自己看作一名艺术工作者。the world's foremost authority on the subject该学科全世界首屈一指的权威He was a singer, but first and foremost a scholar.他是个歌手, 但他主要是一位学者....