Suddenly she dropped the quill as a wild happiness flooded her.她突然感到一阵无限的快乐,当即丢开了手里的鹅毛笔.The Chicago River flooded the city's underground tunnel system...芝加哥河的河水淹没了城市的地下隧道系统。It was not easy to drain the flooded mine....
Citral is a kind of natural spice used widely in food and daily chemical goods.柠檬酸是一种广泛应用于食品和日用化学品工业的天然香料.Process for the isolation of citral from natural Litsea cubeba oil and lemon oil were investigated.另外从柠檬草油的轻度馏份中,分...