1. there is not a great deal of differencebetween...and...

　　...与...的区别不大。

　　2. the graphs show a threefold increase in thenumber of...

　　该图表表明...的数目增长了三倍。

　　3. ..decreased year by year while...increasedsteadily.

　　...逐年减少，而...逐步上升。

　　4. the situation reached a peak(a high point at) of [%].

　　...的情况(局势)到达顶(高)点，为...百分点。

　　5. the figures/situation bottomed out in...

　　数字(情况)在...达到底部。

　　6. the figures reached the bottom/a lowpoint/hit a trough.

　　数字(情况)达到底部(低谷)。

　　7. a is ...times as much/many as b. a是b的...倍。

　　8. a increased by... a增长了...

　　9. a increased to... a增长到...

　　10. high /low /great /small / percentage. 比低高(低)