In Guangxi Zhuang Autonomous Region, the regional meteorological authorities have issued a blue alert for the typhoon and a blue warning for downpours.
在广西，自治区气象部门发布了台风蓝色预警和暴雨蓝色预警。 ?。
In experiments, people exposed to blue light become less sleepy and more alert.
在实验中，身处于蓝光中的人的睡意总是较少，表现得更警觉。
When your eyes are exposed to it directly, the blue light halts production of the sleep-inducing hormone melatonin and makes you feel more alert.
当眼睛直接受到刺激时，就会阻止产生诱导睡眠的褪黑激素，你整个人就会保持清醒状态。
The capital issued a blue storm alert at 7:30 a. m. Tuesday and raised it to yellow on Wednesday morning before raising it again to orange in the early afternoon.
周二早晨7点30分，北京发布暴雨蓝色预警，周三早晨升级至黄色预警，当日下午又升级为橙色预警。
The capital issued a blue storm alert at 7:30 a. m. Tuesday and raised it to yellow on Wednesday morning before raising it again to orange in the early afternoon.
周二早晨7点30分，北京发布暴雨蓝色预警，周三早晨升级至黄色预警，当日下午又升级为橙色预警。
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