介绍： 词根tain = hold,拿，抓，握
1.attain [ə'teɪn]
v. 达到，获得 (类似achieve)
attain objectives/goals /independence 达到目标/获得独立
attainment n. 达到，成就，学识

2.obtain [əb'teɪn]
v. 获得
to obtain knowledge 获取知识
to obtain a master's degree 获得硕士学位

3.contain [kən'teɪn]
vt. 包含，容纳
container 集...

介绍： 词根tain = hold,拿，抓，握
1.attain [ə'teɪn]
v. 达到，获得 (类似achieve)
attain objectives/goals /independence 达到目标/获得独立
attainment n. 达到，成就，学识

2.obtain [əb'teɪn]
v. 获得
to obtain knowledge 获取知识
to obtain a master's degree 获得硕士学位

3.contain [kən'teɪn]
vt. 包含，容纳
container 集装箱，容器
content n. 内容，目录 adj. 满意的

4.retain [rɪ'teɪn]
vt. 保持，保留
She lost the battle to retain control of the company.
她没能保住对公司的控制权。

5.maintain [meɪn'teɪn]
vt. 维持，维修；主张
Despite living in different countries, the two families maintain close links.
尽管生活在不同的国家，俩家人还是保持着亲密的联系。
He maintains that he has never seen that woman.
他坚称从来没见过那个女人。
maintenance n. 维修，保养

6.sustain [sə'steɪn]
vt. 维持，支撑，供养
to sustain a family 养一家人
He seems to find it difficult to sustain relationships with women.
他似乎很难维持与女性之间的关系。
sustainable development 可持续发展

7.entertain [entə'teɪn]
vt. 娱乐，招待
What could be more entertaining than watching the downfall of the high and mighty?
有什么能比看到有权有势的人倒台更让人觉得愉悦呢？
entertaining adj. 令人愉悦的
entertainment n. 娱乐，款待

8.detain [dɪ'teɪn]
vt. 拘留，耽搁
A suspect was detained by the police for questioning.
一个嫌疑犯被警察拘留询问。

9.abstain [əb'steɪn]
vi. 戒除，避免
abstain from smoking/voting 戒烟/放弃表决

10.pertain [pə'teɪn]
vi. 相关
regulations pertaining to high-tech industries 与高科技产业相关的规定