He was a stern critic but an extremely kindly man.他是个苛刻的批评家，但却是个非常善良的人。Alexander Lazarus is a food critic for the newspaper.亚历山大·拉扎勒斯是为该报撰稿的饮食评论家。He was an outspoken critic of apartheid.他公开抨击种族隔离制度。a vociferous critic of...
Sodium Diacetate ( SDA ) and Sodium Dehydroacetate are two new - model preservatives.双乙酸钠和脱氢乙酸钠为两种新型的防腐防霉剂.The apply field of sodium diacetate is introduced briefly.简要介绍了双乙酸钠的应用领域.Sodium diacetate is synthesized by aceti...