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如果你停下来听一个音乐家或街头艺人表演超过一分钟,你就欠他们一美元。
The fact is that women have more freedom and opportunity in America today than ever before.
We are all susceptible to biases, even when we think we're being perfectly rational.
能源的未来不是要在煤炭和可再生能源之间做出选择,而是找到正确的平衡。