我们选取了烂鳍病、白便病和腹水病这三种在2002 ~ 2003年最为常见的养殖大菱鲆细菌性疾病进行病原学的研究。
Fin rot, white feces and ascites syndromes were the common diseases in the years from 2002 to 2003, thus the aetiological study for these bacterial diseases had been emphasized.
你应该记住你的开场白句子，这样你才能不需要看笔记或将视线移离听众便开始发言。
should have your opening sentence well enough in mind that you can deliver it without looking at your notes or away from your listeners.
马白夫公公走进屋子，拿起帽子，机械地要找一本书夹在胳膊下面，找不到，便说道：“啊！对！”
Father Mabeuf went to his room, took his hat, mechanically sought for a book to place under his arm, found none, said: "Ah! Truly!" and went off with a bewildered air.
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