重点讲解：
1. no longer
不再；已不；
eg. This is no longer a dream!
这已经不再是梦想！
eg. Now they shall wait no longer.
现在他们不用再等待了。
2. impress on/upon
使铭记；使谨记；
eg. I had always impressed upon the children that if they worked hard they would succeed in life.
我总让孩子们牢记努力工作就会成功。
eg. I've impressed upon them the need for more professionalism.
我已使他们深刻认识到提高专业素养的必要性。
3. even though
即使；尽管；纵然；
eg. But even though my friend is right, he's only half right.
尽管我的朋友说对了，但是他只对了一半。
eg. Even though I hadn't seen my classmate for many years, I recognized him immediately.
即使多年没有看见我的同学，我也马上认出了他。