It has been shown experimentally that birds can align themselvesto their normal migration routes in blue light but have trouble doing so inyellow or red, so the link seemed worth pursuing.
实验表明，在蓝光中鸟类可以按照正常迁徙路线飞行，而在黄光或红光中则做不到，因此其中的关联值得探讨。
The theme of the four routes are blue coast, rural scenery, sunflower Tours, lavender trip.
四条路线的主题分别是蓝色海岸、田园风光、向日葵之旅、薰衣草之旅。
The theme of the four routes are blue coast, rural scenery, sunflower Tours, lavender trip.
四条路线的主题分别是蓝色海岸、田园风光、向日葵之旅、薰衣草之旅。
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