1. suppress [sə'pres] 
vt. 抑制，镇压 
suppress rebellion 镇压叛乱 
suppress curiosity 压制好奇心

2. oppress [ə'pres] 
vt. 压迫，压抑
Where there is oppression there is resistance.哪里有压迫哪里就有反抗

3. express [ɪk'spres] 
vt. 表达 
expression n. 表现，表示  expressive 善于表达的，有表现力的
Words can't express how happy I am.言语无法表达我有多开心。

4. impress [ɪm'pres] 
v. 给人印象 
She impressed us with sincerity. 她用真诚打动了我们。
impressive adj. 令人印象深刻的 impression n. 印象

5. depress [dɪ'pres] 
vt. 压抑，使沮丧，使萧条
This grug helps depress high hormone levels. 这种药物有助于抑制激素水平。
depressed adj.沮丧的，抑郁的   depression n. 沮丧，不景气，抑郁症
economic depression 经济萧条/ economic recession 经济衰退

6. compress [kəm'pres] 
v. 压缩,精简
compress data/file ; compressed air 压缩空气
to compress a four-page article to four paragraphs 把四页纸的文章精简成四段话

7. shrink [ʃrɪŋk] 
v. 收缩，缩小 
Unfortunately, the world population of Hawaiian geese has shrunk to very small numbers. 不幸的是，夏威夷鹅的全球数量已经减少到了很小的数字。
shrinkage n.

8. condense [kən'dens] 
v.浓缩，凝结，压缩
to condense the report to a single page 把报告缩减到一页
dense adj. 密集的，稠密的   density n. 密度，密集  
population density 人口密度