重点讲解：
1. phase out 逐步淘汰；逐步放弃；
They said the present system of military conscription should be phased out.
他们说，当前的征兵体系应当逐步废除]rliDm*MG7C,CzZ。
2. across the board 影响全体地；全面地；
There are hefty charges across the board for one-way rental.
各处对单程租赁的收费都很高eQBfGm@v8[QYHbhy。
3. serve as 用作；可当…使用；充作；
The museum will serve as a memorial to the millions who passed through Ellis Island.
这个博物馆将用来纪念经过埃利斯岛的数百万移民CQ|ZEImL1l4z1SO。
4. lay the groundwork for 为……奠定基础；
Yesterday's meeting was to lay the groundwork for the task ahead.
昨天的会议是为以后的工作做准备0%dwNIDDfi2qzA@_8。