冬，冬季通常是一年中最冷的季节，介于秋天和春天之间，在北半球从冬至到春分，通常来讲包括十二月、一月和二月

• The usually coldest season of the year, occurring between autumn and spring, extending in the Northern Hemisphere from the winter solstice to the vernal equinox, and popularly considered to be constituted by December, January, and February.