重点讲解：
1. a series of
一连串；一系列；连续；接连；
eg. The business cycle is a series of peaks and troughs.
商业周期就是淡旺期交替x,mj%leMADyAndJjzl。
eg. A series of technical foul-ups delayed the launch of the new product.
一系列技术问题延误了新产品的上市%LArH[1PO2u48G。
2. be full of
有大量…的；满是…的；
eg. This manual is full of useful tips.
这本小册子里有很多实用的小建议=5,f)ODU-jN.5!H]p,。
eg. His working life was full of accidents.
他在一生的工作中遭遇了种种意料之外的事iu!GLD8g)YF&ujzr。
3. a number of
若干；许多；
eg. Her father kept a grocer's shop for a number of years.
她父亲开了几年杂货店=q8sKxW#JB]。
eg. Our teams have notched up a number of wins in the tournament.
我们的运动队在这次联赛中频频获胜Glgu(7Vsq-qI.+_qHB。