1. Yet we might grudge paying a surgeon a high fee for offering us precisely this service.
    但就在外科大夫给我们提供了这种服务后，我们却可能为所支付的昂贵的费用而抱怨。

2. Greeting cards seemed a come-down from her high expectations, but the advice stayed with her, and she decided to give it a try.
    与自己所期望的相比，贺卡似乎太低微了。可是那个建议她却始终记在心上，而且决定试一试。

3. Class is over,we play volleyball.
    下课了,我们打排球.

4. Central Africa, the most tropical portion of this tropical continent, is a land of heavy rainfall and high plateaus.
    中部非洲是这块热带大陆上最热的地区，雨量充沛，地势很高，

5. Costs were so high; they had to put their time and energy into their studies.
    学费太高了，他们得把他们的时间和精力投入到学习中去。

6. Certainly middle-class audiences did; the working-class audiences were more likely to clap for a character who revolted against authority,
    中产阶级当然这样认为；劳动阶级倒更有可能为这样一个反抗权势的角色拍手喝彩：

7. Compared with salesmen who passed the aptitude test but scored high in pessimism, this group made 21 percent more sales in their first year and 57 percent more in their second.
    与另一些通过了能力测试但具有悲观心态的推销员相比，这些人第一年的销售就超出了21%，而第二年更超出了57%。

8. Unfortunately, the professor appeared and the class began.
    令人遗憾的是这时教授进来了，开始上课了。

9. On motorways you can, at least, travel fairly safely at high speeds,
    在公路上还好，你至少能以相当快的速度安全地向前行。

10. Our class is not very big.
    我们班不算很大，