鸿渐把手按她嘴,不许她叹气.He put his hand over her mouth to keep her from sighing.老太婆只好叹气几声走了.The old woman fell silent . Sighing repeatedly she went away.林先生搓着手叹气.Mr. Lin wrung his hands and sighed....
对于α-氨基仍采用Fmoc保护策略, 侧链氨基用二碳酸二叔丁酯引入叔丁氧羰基来保护,侧链胍基用酸敏感保护基2,2, 4,6,7-五甲基二氢苯并呋喃-5-磺酰基来保护.Fmoc, Boc and Pbf were used respectively to protect α - amido, side amido and side guanidine group....
I got a bottle of my best malt out of the sideboard.我从餐具柜里取出一瓶自己收藏的最好的麦芽威士忌。He poured himself another generous measure of malt.他又为自己倒了满满一大杯麦芽威士忌。A soft fire makes sweet malt.文火熬出好麦芽糖....