29. be able to do sth. 能/.会做某事
28. as…as possible/ one can 尽可能……
27. thousands of 成千上万的
26. look forward to doing sth. 盼望做某 事
25. all kinds of 各种各样
23. more and more people 越来越多人 24.in the future 在将来
22. be afraid of 害怕……
21. faster and faster越来越快
20. arrive at/in 到达
19. look down 往下看,俯视
look across 眺望