重点讲解：
1. on the other hand
（从）另一方面（来说）（用于引出相对照的另一点）；
eg. On the other hand, her own feelings were a corrective influence.
另一方面，她自己的情感却是一种净化心灵的力量。
eg. On the other hand, nobody seemed excited about it.
另一方面，似乎没有人对此感到兴奋。
2. the best of both worlds
两头受益；两全其美；
eg. Her living room provides the best of both worlds, with an office at one end and comfortable sofas at the other.
她家客厅一头是办公处，一头是舒适的沙发，真是两全其美。
eg. He lives on a farm and works in a big city in order to have the best of both worlds.
他住在农庄而在大城市工作，以便享有两者之优点。
3. keep in touch with
（与）…保持联系；
eg. We now keep in touch with him by write letter.
我们现在靠写信与他保持联系。
eg. He expressed the hope that we would keep in touch with his firm.
他表示希望我们与他的公司保持联系
