在备战考研英语二的征途上，掌握2200个高频词汇是不可或缺的。以下是一些精选词汇及其用法：
1. Economically：ad. 经济上，经济地。例句：The government is investing economically in education to ensure a brighter future for all.
2. Diverse：adj. 多样化的。例句：Our classroom is diverse with students from various cultural backgrounds.
3. Consequently：adv. 因此，所以。例句：Because of his hard work, he consequently achieved excellent results.
4. Innovative：adj. 创新的。例句：The innovative technology has revolutionized the way we communicate.
5. Concise：adj. 简洁的。例句：Her speech was concise and to the point.
6. Prolong：v. 延长，拖延。例句：The government's decision to prolong the deadline for the project was met with criticism.
7. Vulnerable：adj. 易受伤的，脆弱的。例句：Young children are vulnerable to diseases.
8. Converge：v. 聚集，会合。例句：People from all over the world converged on the conference to discuss climate change.
9. Dilemma：n. 两难困境。例句：He is in a dilemma between pursuing his career and spending time with his family.
10. Evident：adj. 明显的。例句：The evidence is evident that smoking causes cancer.
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