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 n. 孤儿

vt. 使成为孤儿

A: You look very unusual today.

B: Yes, I was tired with the orthodox.

orthodox a. 1. 传统的；2. 正统的，正宗的