| 31. | All the students are expert drivers, but before they drive any of the buses, they will have to pass a special test. |
| 所有的学生都是开车的能手，但在驾驶公共汽车之前，他们必须通过一项专门测验。
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| 32. | At a special swimming pool in Los Angeles, children become expert at holding their breath under water even before they can walk. |
| 在洛杉矶的一个特设的游泳池里，孩子们甚至在还没有学会走路时就已经能熟练地在水下屏住呼吸了。
|
| 33. | Tom is expert in writing report. |
| 汤姆对写报告很内行。
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| 34. | An expert could probably tell which was the original and which the copy, but to the layman's eye the three vases were as like as peas in a pod. |
| 一位专家或许能分辨哪是原物，哪是仿造品，但在一个外行人的眼里，这三个花瓶非常相似。
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| 35. | an expert in psychology |
| 心理学专家
|
| 36. | an expert at playing golf |
| 打高尔夫球的能手
|
| 37. | an expert on ancient Greek vases |
| 古希腊花瓶专家
|
| 38. | according to expert advice |
| 根据专家的意见
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| 39. | an expert rider |
| 熟练的骑手
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| 40. | an expert job |
| 需有专门知识的工作
|