重点讲解：
1. work out 想出，得到（解决方法）；解（谜）；
例句：He's trying to work out a way to solve the problem.
他正在努力想办法解决这个问题。
2. deault on 不履行；未支付；
例句：The first warning signals came in March when the company defaulted on its initial payment of £30 million.
第一次出现警示信号是在3月份，当时该公司未能按时交纳3，000万英镑的首期付款。
3. prevent sb. from doing sth. 阻止；制止；阻碍；
例句：This can then prevent money from flowing out.
这可以防止资金流出。
4. deter sb. from doing sth. 威慑住；吓住；阻止；制止；
例句：Several factors deter new industry from coming to the city.
许多因素造成了新工业无法进入这座城市。
5. on average 平均起来；按平均值；
例句：On average the machine turns out one bottle every two seconds.
这台机器平均每两秒钟生产一只瓶子。
6. ahead of 提前；
例句：I think the work can be completed ahead of time.
我认为这项工作能提前完成。
7. in terms of 在…方面；从…角度看；根据…来说；
例句：All goods and resources have value in terms of exchange or use.
物品和资源具有交换或使用价值。
8. thanks to 幸亏；归因于；
例句：Thanks to his hands, everything seems to come alive.
幸亏他的帮忙，一切都似乎有了好转。