21. It takes me three clear / cleanly days. 它花了我整整三天时间。

　　22. There are fifty and odd (or and more) students in our class. 我们班有五十余人。

　　23. The total expense amount to a hundred dollars. 全部费用合计100 美元。

　　24. We were fifteen, all told. 我们一共十五人。

　　25. The delegation consisted of 15, inclusive of (including) two interpreters. 代表团共十五人，包括两名翻译在内。

　　26. There were fifty people present, not counting (excluding) the children. 出席者达五十人， 儿童未计算在内。

　　27. We take a rest at intervals of two hours. 我们每隔两小时休息一次。

　　28. I ask you to teach me every other day. 我请你每隔一天来教我。

　　29. Beijing is ten times as big as my home town. 北京有我的家乡十个那么大。

　　30. The sun is a huge blazing ball, a million times larger than the earth. 太阳是个庞大的炽燃火球，比地球大一百多万倍。

　　31. By comparison with 1992, the foreign trade turnover of that country in 2003 increased (to) 3.5 times. 与1992年相比，这个国家2003年对外贸易总额增加了2.5 倍(增加到3.5 倍)。

　　32. That table measures three feet by three. 那张桌子三英尺长，三英尺宽。

　　33. He valued the house for me at ?,500. 这房子他替我作价为三千五百镑。

　　34. His coat is rated at 20 yuan. 他的大衣值价二十元。

　　35. The job was finished at a sitting (a stretch). 这工作一下子(一口气)就做完了。