Mother has gone out to do some shopping.妈妈出去买东西了.Mother went to town to do some shopping yesterday.昨天母亲到市区去买东西.You can do some shopping in the shopping mall, if you like.你们愿意的话不妨去购物城买买东西....
Cysteine is the crucial limiting amino acid for intracellular GSH synthesis.一种略带甜味的晶状氨基酸,通过半胱氨酸参与合成.Resistin, a plasma protein , belongs to a family of cysteine - rich secretory proteins.抵抗素是存在于血浆中的富含半胱氨酸的分泌性蛋白.The actio...