decrease
vt. & vi. (使)缩短; 减小, 减少
n. 减小, 降低; 减少(量)
搭配：decrease/increase by 减少/增加了。。
decrease/increase to 减少/增加到。。
1.The traffic accidents in the city decreased last year.
该城市去年交通事故减少了。
2.There has been some decrease in imports.
进口货物有所减少。
3.The decrease in sales was almost 20 percent.
销售量差不多减少了20％。
4.A local newspaper remarks that crime is on the decrease.
一家地方报纸评论说犯罪案件在减少。
definite
adj. 明确的, 确切的;一定的, 肯定的
1.We demand a definite answer.
我们要求明确的答案。
2.The doctor is quite definite about Tom having measles.
医生十分肯定汤姆得了麻疹。
3.It would be hard to give a definite reply.
扯不清楚。
democracy
n. 民主, 民主制;民主国家
1.Democracy is exercised within the ranks of the people.
在人民内部实行民主。
2. We should foster people's democracy through the development of inner- Party democracy.
通过发展党内民主，积极推动人民民主的发展。
3.We tore from them the mask of democracy.
我们撕下了他们民主的假面具。
4.But where were democracy and freedom to be found?
但是民主自由在何处呢？
derive
vt. & vi. 得到 ;源于
搭配：derive...from 渊源于，来自
辨析：derive表示来源，指存在于另一种形式或另一类事物中，并有承袭的意思；而originate指明确的来源和起点，明确的记载或出处。
1.He derives his income from freelance work.
他以自由职业获取收入。
2.He derived his enthusiasm for literature from his father.
他对文学的爱好是受他父亲的影响。
3.We can derive great pleasure from our studies.
我们可以从读书研究中获得极大的乐趣。
