重点讲解：
1. a series of 一连串；一系列；连续；接连；
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mU)+z2fW~9_pxfw,[ssg。
2. assist in 帮助，协助；
We are looking for people who would be willing to assist in the group's work.
我们正寻找愿意协助该团体工作的人~dqAQJyoTyKun。
3. speak for itself 不言而喻；
Her success speaks for itself.
她的成功有目共睹#pTF7@yvfO!dF0F。
4. be charged with 指控；控告；
The three accused, aged between 19 and 20, are charged with attempted murder.
3个年龄在19到20岁之间的被告被控谋杀未遂xm(YWFnb#|Kuq((ad。