重点讲解：
1. wrap up 圆满完成，圆满结束(工作、协议等)；
例句：Six parties were trying to wrap up the talks on Saturday.
六方正努力于周六结束会谈。
2. as of 在…时；从…起；自…始；
例句：As of this writing, no reply has been received.
到写这封信时为止，尚未得到答复。
3. worlds apart 大相径庭；迥然不同；
例句：Their ways of life are worlds apart.
他们的生活方式真是有天壤之别。
4. after all 毕竟；终究；
例句：Things weren't so bad, after all. I was among friends again.
情况还不是那么糟糕，毕竟我又回到了朋友当中。