He was determined to track down the cause of food spoilage.他决心查出食品腐烂的原因.The principal methods of avoiding spoilage are the use of pure yeast strains as starters.防止啤酒变坏的主要方法是用纯酵母菌株发酵.Food spoilage problems occur with mini...
This was after winning two prizes in Craven - A national photography competition.这是获胜后的两个奖项,在文 - 全国摄影比赛....his craven obedience to his employers.他懦弱怕事，对雇主一味地服从They condemned the deal as a craven surrender.他们谴责这笔交易为毫无志气的投...