like: It was very warm in the room, so I opened a window. → →
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It was very warm in the room, so I opened a window. ☊ 
Trong phòng rất ấm nên tôi đã mở cửa sổ. ☊ It was very warm in the room, so I opened a window. ☊ Trong phòng rất ấm nên tôi đã mở cửa sổ. ☊