Delhi is facing a severesevere/sɪˈvɪr/L2（天气、情况等）严重的，剧烈的very bad, serious, or extreme heatwave with official air temperatures reaching 43.5°C, but surface temperatures on roads and concrete climbed to 64°C, making the city feel much hotter. Greenpeace researcher Nibedita Saha used a thermal camera and found that shaded areas under trees were cooler. "We got instant relief. That's the difference just one tree can make," she said. She warned that consistent exposureexposure/ɪkˈspoʊʒər/L2暴露（于危险、高温等不利环境中）the state of being in a situation where something harmful or unpleasant affects you to such high temperatures can cause major health issues.
In addition, doctors advise people to drink water often and wear light clothing, and Dr Fathahudeen warned that when body temperature exceeds 40°C, the body stops working normally. This can cause heat exhaustion, headaches, and fatiguefatigue/fəˈtiːɡ/L2疲劳，疲惫a feeling of being extremely tired, both physically and mentally. Street vendors like Sanjana Ben suffer greatly; she sells dry fruits on the pavement and often feels dizzy and has blurred vision. Another vendor, Mahfouz Alam, said there is no relief day or night; he feels listlesslistless/ˈlɪstləs/L2无精打采的，倦怠的having no energy or interest in doing things and cannot sleep. He also said that trees provide essential shade, and without them it would be impossible to work.
Many poor people live in small concrete homes with no windows. The indoor temperature can reach 40°C, and a fan only blows hot air. Abhishek and his sister Kajal feel nauseous from the heat. Abhishek keeps a heat register and wrote that his mother looks more tired and that cooking makes the heat unbearableunbearable/ʌnˈberəbəl/L2无法忍受的，难以承受的too unpleasant or painful to accept or deal with. He said that nights are the hardest and that inside feels like standing next to an oven.
