But because it's all digital it eliminates the used book market and eliminates any sharing and because homework and tests are through an access code, it eliminates any ability to opt out.
2018年6月四级真题（第三套）阅读 Section B
柯林斯高阶英汉双解学习词典释义
VERB
消除，剔除，根除(尤指不需要之物)
To eliminate something, especially something you do not want or need, means to remove it completely.
If someone says that they have eliminated an enemy, they mean that they have killed them. By using the word 'eliminate', they are trying to make the action sound more positive than if they used the word 'kill'.