重点讲解：
1. in total 总共；总计；
例句：I put the weight at four pounds in total.
我猜总重量是四磅&5R;z6)FFeu+7iCu|icv。
2. prevent sb. from doing sth. 阻止；制止；阻碍；
例句：We must at all costs prevent them from finding out about the plan.
我们无论如何不能让他们探知这个计划YHK3^Ty%~dU|3J5%|n。
3. ahead of 早于；在…之前；
例句：The merger rumors are partly wishful thinking, and partially a way for seasoned traders to get ahead of the next big stock jump.
并购传言是一种主观愿望，也是经验老道的交易员赶在下一轮股市大涨前做好准备的手段之一rx;a42RmYh058IMH。
4. incorporate into 把…合并；使并入；
例句：We should incorporate more technology into the new design.
我们在新的设计中应该加入更多的科技原素Zg]^*nr%%5z54X@Pnyw*。