Usages of dōngtiān
冬天 在 安静 的 房间 里 喝 热 茶、 听 音乐， 让 人 觉得 很 温暖。dōngtiān zài ānjìng de fángjiān lǐ hē rè chá, tīng yīnyuè, ràng rén juéde hěn wēnnuǎn.
In winter, drinking hot tea and listening to music in a quiet room makes people feel very warm.
冬天 天气 很 冷， 我们 在 家 喝 热 茶。dōngtiān tiānqì hěn lěng, wǒmen zài jiā hē rè chá.
In winter, when the weather is very cold, we drink hot tea at home.
我 的 办公室 周围 很 安静， 冬天 有 暖气， 夏天 有 空调。wǒ de bàngōngshì zhōuwéi hěn ānjìng, dōngtiān yǒu nuǎnqì, xiàtiān yǒu kōngtiáo.
The area around my office is very quiet; in winter there is heating, and in summer there is air conditioning.
冬天 的 时候， 父母 开 着 暖气 在 家 看 电视， 知道 孩子 安静 地 在 房间 里 学习， 也 觉得 很 安心。dōngtiān de shíhou, fùmǔ kāi zhe nuǎnqì zài jiā kàn diànshì, zhīdào háizi ānjìng de zài fángjiān lǐ xuéxí, yě juéde hěn ānxīn.
In winter, the parents have the heating on and watch TV at home; knowing the children are quietly studying in their rooms, they also feel very at ease.
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