A: What type of tree is that?
B: I think it is an oak tree. It is certainly large enough to be one. oak n. １．栎树，橡树；２．栎木，橡木 A: Oh no, I’ve dropped an oar . B: We will have to swim to the shore now. oar n. 桨，橹 A: Please tell me the big secret. B: Sorry, I took an oath and swore that I wouldn‘t. oath n. １．誓言，誓约；咒骂，诅咒语 on / under oath 在法庭上宣过誓 A: My pupils are so obedient , they always do their home work. B: You are lucky, mine are terrible. obedient a. 服从的，顺从的 A: Robert told an obscene joke last night. B: Is it too rude to repeat to me? obscene a. １．淫秽的，下流的；２．可憎的，可恶的 A: Did you understand the theatre performance? B: No, it was too obscure for me. obscure a. １．不着名的，不重要的；２．费解的，模糊不清的；３．隐藏的，偏僻的 vt. 使变模糊，掩盖 A: You are always playing video games. B: I know. I have an obsession. obsession n. 困扰，无法摆脱的思想（或情感） A: Excuse me, but your car is obstructing the entrance to my home. B: Oh, I’ll move it right away. obstruct vt. １．阻塞，堵塞；２．阻碍，阻止，妨碍 A: Can I move into the apartment today? B: No, you can have occupancy next week. occupancy n. 占有，使用，居住 A: What is that terrible odour ? B: Oh, sorry, it must be my socks. odour n. 气味 A: Beverley looked stunning at the party. B: Yes, her outfit was offset by her jewelry. offset vt. 补偿，抵消 A: Do you have any offspring ? B: Yes, I have three daughters. offspring n. １．子女，子孙，后代；２．（动物的）崽 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. (for) 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. B: That must have been a terrible ordeal . ordeal n. 苦难经理，折磨，煎熬 A: I love studying science. B: I orient more towards the Arts. orient vt. １．使适应，使熟悉情况（或环境等）；２．（to ,toward）使朝向，以．．．为方向（目标） n. 东方，亚洲（尤指远东），东半球 A: Oriental cuisine is my favourite. B: Yes, I also love Chinese food. oriental a. 东方的，东方人的，东方文化的 A: I was unable to find my orientation in the city. B: You should have carried a map with you. orientation n. １．方向，目标，方位；２．熟悉情况，适应，情况介绍 A: From where does the guitar originate ? B: Well, there are many types of guitar, so probably many countries. originate vi. (in,from,with) 起源于，来自，产生 vt. 创造，创始，开创 A: That is a beautiful ornament beside the TV. B: Thanks, it was a gift from a friend. ornament n. １．装饰品，点缀品；２．装饰，点缀 vt. 装饰，点缀，美化 A: I was an orphan until the age of seven. B: Goodness, do you know what happened to your parents? orphan
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