这是因为色素的作用，它们反射光线，使眼睛看到的东西呈现出颜色。

This is because of pigments, which reflect light and make what the eye sees as colors.

youdao

这是因为它们使事物看起来漂亮了。

This is because they make things look good!

youdao

这是因为XML使我们能够以更符合我们做事的方式来表示信息。

This is because XML allows us to express information in ways that better match the way we do business.

youdao

Well, it changes the food in ways that are commercially appealing for the industry.

这是因为它能使食品业获得更大利润

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选