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A: Do you like olives ? B: Yes, especially black ones in salad. olive n. 橄榄，橄榄树 A: Is that glass clear? B: No, it is opaque , that is why you are having difficulty seeing through it. opaque a. 1.不透明的，不透光的;2.难理解的，晦涩的 A: Women in the old days were frequently oppressed by their husbands. B: I am glad that times are changing. oppress vt. 1.压迫，压制;2.使(心情等)沉重，使烦恼 A: You would like the blue car? B: No, I think I ll opt for the red one. opt vt. 选择，挑选 A: The weather will be wonderful tomorrow. B: You are always filled with optimism . optimism n. 乐观，乐观主义 A: I study at my optimum between eight and ten in the morning. B: Oh, I work best in the evenings. optimum a. 最合适的，最优的，最佳的 A: Where did you get the apples? B: I picked them in the orchard down the road. orchard n. 果园 A: I was in a serious car accident last year. | 
