在今天的考研英语单词学习中，我们将深入剖析“5500”这个数字背后的含义。这个数字代表了考研英语词汇表中必须掌握的核心单词数量。以下是对这些单词的每日讲解：
1. abandon - 放弃，遗弃。例句：He finally had to abandon his dream of becoming a professional musician due to financial struggles.
2. benefit - 利益，好处。例句：Regular exercise can benefit your mental health as well as your physical well-being.
3. challenge - 挑战，困难。例句：The project presented a significant challenge to the team.
4. contribute - 贡献，捐助。例句：She contributes a lot to the community through her volunteer work.
5. efficient - 高效的，有能力的。例句：The new software is more efficient than the old one.
6. expand - 扩大，扩展。例句：The company plans to expand its operations into new markets.
7. impact - 影响，作用。例句：The decision had a profound impact on the future of the project.
8. identify - 识别，鉴定。例句：The experts were able to identify the ancient artifact from its distinctive features.
9. implement - 实施，执行。例句：The government is implementing new policies to reduce unemployment.
10. innovate - 创新，改革。例句：The company is known for its innovative approach to product design.
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