Pittsburgh has changed itself physically too.
匹兹堡还改变了其城市外貌。
The caterpillar changed itself to become a butterfly.
那毛毛虫变成了蝴蝶。
The pill itself has changed a lot since it first came onto the market.
自从投放市场以来,这种片剂本身已经改变了许多。
That's the crucial thing: if they're not willing, the use of the sign doesn't work, which confirms the idea that nothing can be changed simply by individual agency in and of itself.
这很关键:,如果他们自己不愿意使用,符号就没有意义,这也就应证了我们的观点,没有人能单独改变一个群体符号的使用方式。
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