重点讲解：
1. result in 导致；引起；造成；
例句：A diet with no exercise is bad for the health, because it will result in a loss of both fat and muscle tissue.
不锻炼光节食是有害于健康的，因为它将在导致脂肪损失的同时，也导致肌肉组织的损失。
2. in an effort to do sth. 努力做某事；
例句：We went over every detail of his story in an effort to discover whether it was true or not.
我们把他说的每个细节都仔细考虑过，以期发现他说的是真是假。
3. communicate with 沟通；联系；交流；
例句：Parents often find it difficult to communicate with their children.
父母亲常会发觉难于跟他们的小孩沟通。
4. year on year 年同比，与前一年同期比较；
例句：Spending has increased year on year.
与去年同期比较，开销增加了。
5. a total of 总数；总额；合计；
例句：A total of 25 people have flown the aircraft.
总共有25人先后驾驶过这架飞机。
