人类的大脑容量变得越来越大，于是人类开始发明越来越多的工具和机器。
The human brain grew bigger, and human beings began to invent more and more tools and machines.
色彩设计工具和机器。
工具和机器区的时候，我知道会出现什么情况！
Maybe I should hang on to those. I know what happens when you get around tools and machines!
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