2. maintain vt.保持; 继续;保养, 维护
例句:The two countries have maintained friendly relations for many years.
两国多年来一直保持着友好的关系。
3. observant adj. 严守教规的
例句:You should be observant of the traffic rules.
你应该遵守交通规则。
4. tension n.紧张;紧张的状态
例句:The diplomat threw in a joke, and the tension was instantly relieved.
那位外交官插进一个笑话, 紧张的气氛顿时缓和下来。
5. commitment n.承诺, 许诺, 保证;承担的义务;信奉, 献身
例句:He made a commitment to pay the rent on time.
他保证按时付房租。
6. appointment n. 任命, 委派
例句:They made the appointment of Peter as chairman of the union.
他们任命彼得为工会主席。
7. term n. 任期; 期限
例句:An American President's term of office is four years.
美国总统的任期是四年。
8. guarantee vt. 保证; 担保
例句:We guarantee to be here tomorrow.
我们保证明天来。
9. leak vt.使泄露
例句:He leaked the news of the ambassador's visit.
他把大使来访的消息泄露出去了。
10. summary n. 摘要, 概要, 总结, 概括
例句:He made a summary of what had been done.
他总结了所做的事情。