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我们唯一能知道的是我们一无所知,这是人类智慧的最高境界。
I always wanted to be a singer, and I focused on that goal, even when others told me I couldn't do it.
我们甚至不知道自己有多强大,直到被迫展现出隐藏的力量。
Real recognize real.
The value chain is the set of activities through which a product or service is created and delivered to customers.