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1.clean up 清理，打扫
例句：There is stuff all over it that you have to clean up. You can't wash your hair in it.
你必须清理覆盖在它上面的所有东西，而且你不可以在那里洗头发。
2.build around 围绕...而建
例句：What's specific about this model group is, that it's not just about the actual model, but many times about the whole infrastructure people build around it.
这组模型的特殊之处并不只是在于它们是仿真模型，更为重要的因素是还同时制作了模型周围的整个基础措施。
