It's winter. We wear coats and gloves. We don't wear shirts.
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去过北美西北欧的人都注意到,那里冬天室内暖气温度过高,因为人们愿意只穿衬衫甚至T恤!
People who have been to North America, Western and Northern Europe might have noticed, that the indoor temperature has been kept so high because they are only willing to wear shirts, or even T-shirt!