重点讲解：
1. not only...but also...
不但…而且…；
eg. Not only he also his wife devoted her lifetime to teaching.
不仅是他自己而且他妻子也把她的一生奉献给了教育事业。
eg. The nurse was not only competent but also kind.
那个护士不但能干而且亲切。
2. pay homage to
向…表示敬意；
eg. We pay homage to the genius of Shakespeare.
我们对莎士比亚的天才表示敬仰。
eg. Mary came to pay homage to the dead man.
玛丽过来向死者告别。
3. be known for
以…闻名的；
eg. He was known for running a brutal extortion racket.
他因干过一起残忍的敲诈勒索而出名。
eg. The 1970s were best known for rock music.
20世纪70年代以摇滚乐而闻名。
4. specialize in
专门从事；专门经营；专门研究；专攻；
eg. We specialize in quality furniture.
我们专门经营优质家具。
eg. Many libraries specialize in genealogy.
许多图书馆专门收藏氏族家谱。
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