精通英语四级词汇是提升英语能力的基石。以下是精心挑选的20组英语四级常用词汇示例，每组均配有详细的中文解释，旨在助您深入理解并牢固记忆，轻松应对各类英语考试，同时拓宽您的语言视野。

1.alternative - a. 两者择一的；供选择的 n. 可供选择的事物

例句：There are several alternative routes to get to the airport.

2.complicated - a. 复杂的

例句：The instructions for this machine are complicated and difficult to follow.

3.decrease - vi. 减少，减小

例句：The population of the city has decreased over the last decade.

4.economy - n. 经济；节约

例句：The country's economy is growing rapidly.

5.effective - a. 有效的

例句：The new medication was very effective in treating the disease.

6.adapt - vt. 使适应；改编

例句：She quickly adapted to the new environment at university.

7.embarrass - vt. 使窘迫，使尴尬

例句：He was embarrassed when he forgot her name.

8.experience - n. 经验；经历

例句：She gained valuable work experience during her internship.

9.frustrate - vt. 使沮丧

例句：Failing the exam frustrated him and he decided to study harder.

10.generate - vt. 产生；引起

例句：The company generates a large amount of revenue every year.

11.indicate - vt. 指示；表示

例句：The map indicates that the restaurant is located downtown.

12.maintain - vt. 维持；赡养

例句：She maintains a healthy diet and regular exercise.

13.negative - a. 消极的；否定的

例句：He has a negative attitude towards change.

14.oppose - vt. 反对；反抗

例句：Many people opposed the new tax proposal.

15.potential - n. 潜力 a. 潜在的

例句：She has the potential to become a great artist.

16.recommend - vt. 推荐；建议

例句：I would recommend this restaurant for its delicious food.

17.rely - vi. 依赖；依靠

例句：She relies on her friends for emotional support.

18.significant - a. 有意义的；重要的

例句：This discovery was significant in the field of medicine.

19.substitute - n. 代用品 vt. 代替

例句：He used sugar as a substitute for honey in the recipe.

20.unique - a. 唯一的；独特的

例句：Each person's fingerprint is unique.

以上词汇和解释旨在帮助您更好地掌握英语四级词汇，建议结合例句进行记忆。通过精选词汇的学习，相信你的英语能力将更上一层楼！