The earthquake also exposed the darker side of humanity .

地震也使人们暴露了人性的黑暗面。

Most of these streaks are darker than the surrounding sand .

这些条痕大多数都比周围的沙子更暗。

Emerging hair may look darker because it has not been bleached by the sun .

新的毛发看起来更黑，是因为它没有被太阳光漂白。

The darker the bean , the more antioxidants it contains .

豆类的颜色越深，它包含的抗氧化剂越多。

But the mood is also much darker .

但其氛围也更为阴暗。