但是根据当时的电子邮件，帕克夫妇仍在等待比罗的最终报告。
But, according to e-mails at the time, the Parkers were still waiting for his final report.
根据当时比较新鲜的补色理论，应该使用紫色才合乎逻辑，因为它是阳光的颜色——黄色的补色。
Working from the then-relatively new theory of complementary colors, the logical color to use was violet, being the complementary of yellow, the color of sunlight.
Gross根据当时海底地震导致印度洋海啸，在2005年1月科学美国的发言解释了这个概念。
Gross spoke with Scientific American in January 2005 to explain the concept following the then-recent undersea earthquake that caused the Indian Ocean tsunami.
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