8. 质量控制工具的保养是会很昂贵的。(maintenance) The maintenance of quality-control instruments can be very costly.
Unit 6
1. 如果对这台器械有不清楚的地方，你可以写信到我们总公司去询问。(address)
If there is anything you are not clear about the device, address your inquiry to our head office.
2. 在执行计划之前，我们最好把它的每一个方面考虑仔细，看看是否切实可行。(scrutinize)
Before we put the new plan into practice, we had better scrutinize every aspect of it to make sure that it is practicable.
3. 新的规章执行后，我们预期这地区的治安情况会有好转。(a change for the better)
We expect that there will be a change for the better in the security situation of this area after the new regulations are implemented.
4. 不要把他的话当真。他不过是开个玩笑而已。(literally)
Don't take his words literally. He's just cracking a joke.
5. 在农业中应用固氮作用(nitrogen fixation)的前景良好。(prospect)
The prospect of employing nitrogen fixation in agriculture is promising.
6. 他想发明一种不留痕迹的涂改液，但却以失败而告终。(contrive)
His attempt at contriving a correcting fluid which leaves no marks on paper ended in failure.
7. 那个外国人不会说汉语，他用手势表达他的要求，但是无法把意思表达出来。(get sth. across)
The foreigner who did not speak Chinese gestured to make a request, but he just couldn't get his idea across.
8. 他不考虑这件事多么紧迫而断然拒绝，不留一丝余地。(once and for all)
Without considering the urgency of the matter, he gave us a flat refusal, once and for all.
Unit Seven
1. 他怪异的行为有悖于一般的良好行为规范。(run counter to)
His peculiar behaviour runs counter to the popular concept of good conduct.
2. 可以肯定的是，历史上鲜有人能同时在科学和数学领域的成就比牛顿更突出。(impact)
What is certain is that few people in history have created a greater impact than Newton on the development of both science and mathematics.
3. 你不该嘲笑孩子的失败，应该鼓励他们再去尝试。(deride)
You are not supposed to deride children for their failures; you should encourage them to try again, instead.
4. 在Judy毕业典礼那天，她的叔叔婶婶以丰盛的晚餐来款待她。(sumptuous)
On her graduation day, Judy was treated to a sumptuous dinner by her uncle and aunt.
5. 对于他在公司的过往表现，没有人有什么不满。(with respect to)
With respect to his past record in the firm, no one has anything to complain about.
6. 他们的自由与我们的自由息息相关，我们不能单独行动。(inextricably)
Their freedom is inextricably bound to ours. We cannot act alone.
7. 我年迈的叔祖母不习惯使用那些市场上盛行的一次性物品。(disposable)
My aged great aunt is not used to the disposable goods which flood the market today.
8. 他在考试中作弊被抓住后，名字马上被从应考者名单上删去。(eliminate)
His name was immediately eliminated from the list of candidates after he was caught cheating in the exam.
Unit Eight
1.他企图影射John 是肇事者，结果是徒劳的。(insinuate, futile)
His attempt at insinuating that John was the culprit turned out to be futile.
2.每当没能完成期望他做的事时，他都善于临时编个借口来为自己开脱。(improvise)
He is very clever at improvising excuses each time he fails to do what is expected of him.
3.他的西藏之行可以让他想参加布达拉宫的愿望如愿以偿了。(gratify)
His trip to Tibet may well gratify his desire to see the Potala.
4.这家公司人力资源雄厚，足以应对其他大公司的挑战。(command)
This corporation commands distinguished human resources, rich enough to meet challenges from other big corporations.