1.competent ['kɒmpɪt(ə)nt] 
adj. 胜任的；有能力的；能干的；足够的
Most adults do not feel competent to deal with a medical emergency involving a child. 多数成年人感到难以应付小孩医疗突发事件。

2. capacity [kə'pæsɪtɪ] 
n. 能力；容量；资格，地位；生产力
I really admire his capacity for work. 我真钦佩他的工作能力。

3. eligible ['elɪdʒɪb(ə)l] 
adj. 合格的，合适的；符合条件的；有资格当选的
Almost half the population are eligible to vote in today's election. 将近一半的居民有资格在今天的选举中投票。

4. qualify ['kwɒlɪfaɪ] 
v. 限制；使具有资格；证明…合格
You must qualify yourself for the post. 你必须使自己具备担任这一工作的资格。

5. qualification [,kwɒlɪfɪ'keɪʃ(ə)n] 
n. 资格；条件；限制；赋予资格
Responsibility and reliability are necessary qualifications, as well as a friendly and outgoing personality.
责任感和可靠性是必需的素质，友善和外向的性格也必不可少。

6. pioneer [paɪə'nɪə] 
n. 先锋；拓荒者v. 开辟；倡导；提倡； 作先驱
He was a pioneer in the use of X-rays. 他是最早使用X光的人。

7. forerunner ['fɔːrʌnə] 
n. 先驱；先驱者；预兆
Moral corruption is the forerunner of the nation's decline. 道德败坏是这个民族衰落的先兆。

8. predecessor ['priːdɪsesə] 
n. 前任，前辈
He maintained that he learned everything he knew from his predecessor. 他坚称他所知道的一切都是从他的前任那儿学到的。

9. respectively [rɪ'spektɪvlɪ] 
adv. 分别地；各自地，独自地
Their sons were three and six respectively. 他们的儿子们分别是3岁和6岁。

10. vigorous ['vɪg(ə)rəs] 
adj. 有力的；精力充沛的
Very vigorous exercise can increase the risk of heart attacks. 耗费大量体力的运动会增加心脏病发作的风险。