重点讲解：
1. for example
例如；比如；
eg. For example, air is invisible.
比如：空气是看不见的。
eg. Football, for example, is very popular in the world.
比如，足球在世界上是非常受欢迎的。
2. as well
也；还；
eg. The inverse was surprisingly true as well.
反之，情形也惊人的相似。
eg. People with disabilities have got a vote as well, you know.
你知道，残疾人士也拥有投票权。
3. You're welcome
没关系，不客气；
eg. "Thank you for the information." — "You're welcome."
“谢谢你提供的信息。”——“不客气。”
eg. You're welcome, " he said, his voice choked with emotion.
“不客气，” 他说，嗓音因激动而哽咽了。
