Very hot, in the heavy, sticky way that makes you feel weak and uncomfortable. This is the key thing: 'sweltering' is not just a big number on the thermometer — it is heat you suffer in. Your shirt sticks to your back, the air feels thick, you do not want to move.

Very hotsweltering（悶熱到讓人受不了）就是形容非常熱 in the heavy, sticky way那種悶悶黏黏的熱 that makes you feel weak and uncomfortable讓你覺得虛脫又不舒服 This is the key thing重點是 'sweltering' is not just a big number on the thermometer'sweltering'不只是溫度計上的一個大數字 it is heat you suffer in而是你在裡面受苦的那種熱 Your shirt sticks to your back你的襯衫黏在背上 the air feels thick空氣感覺很濃稠 you do not want to move你完全不想動

So people use it most about summer days, about a room with no air conditioning, about a crowded bus. It works best with humid heat, which makes it a very natural word for Taiwan. A dry desert can be hot, and people do say 'sweltering' there too, but the word feels most at home where the air is wet.

So people use it most所以人們最常用它 about summer days來形容夏天 about a room with no air conditioning沒有冷氣的房間 about a crowded bus或擁擠的公車 It works best with humid heat它跟濕熱搭配起來最貼切 which makes it a very natural word for Taiwan這也讓它成為形容台灣天氣很自然的字 A dry desert can be hot乾燥的沙漠也可以很熱 and people do say 'sweltering' there too人們在那裡也確實會說'sweltering' but the word feels most at home where the air is wet不過這個字用在濕的地方感覺最貼切

It is a normal everyday word — not formal, not slang — and it is a little dramatic, so it carries a complaint inside it. If you say 'It was sweltering', you are not giving information about the weather; you are telling someone you had a bad time.

It is a normal everyday word它是個普通的日常字 not formal, not slang不正式也不是俚語 and it is a little dramatic不過語氣有點誇張 so it carries a complaint inside it所以裡面帶著抱怨的意味 If you say 'It was sweltering'如果你說「It was sweltering」 you are not giving information about the weather你不是在提供天氣資訊 you are telling someone you had a bad time你是在告訴對方你過得很難受

You will also see it in front of a noun a lot: a sweltering afternoon, sweltering heat, a sweltering kitchen. There is a verb 'swelter' (to suffer in the heat), but it is much rarer, and most students will only ever meet the -ing form.

You will also see it in front of a noun a lot它也常常出現在名詞前面 a sweltering afternoon, sweltering heat, a sweltering kitchen像sweltering afternoon、sweltering heat、a sweltering kitchen There is a verb 'swelter' (to suffer in the heat)也有動詞swelter，意思是「在熱裡受苦」 but it is much rarer不過少見很多 and most students will only ever meet the -ing form大部分學生大概只會遇到-ing的形式