31. there is not a great deal of differencebetween...and... ...与...的区别不大。 32. the graphs show a threefold increase in thenumber of... 该图表表明...的数目增长了三倍。 33. ..decreased year by year while...increasedsteadily. ...逐年减少，而...逐步上升。 34. the situation reached a peak(a high point at) of [%]. ...的情况(局势)到达顶(高)点，为...百分点。 35. the figures/situation bottomed out in... 数字(情况)在...达到底部。 36. the figures reached the bottom/a lowpoint/hit a trough. 数字(情况)达到底部(低谷)。 37. a is ...times as much/many as b. a是b的...倍。 38. a increased by... a增长了... 39. a increased to... a增长到... 40. high /low /great /small / percentage. 比低高(低)