| Chinese | English |
| 季节 | season One of the four equal periods into which the year is divided by the equinoxes and solstices, resulting from the apparent movement of the sun north and south of the equator during the course of the earth's orbit around it. These periods (spring, summer, autumn and winter) have their characteristic weather conditions in different regions, and occur at opposite times of the year in the N and S hemispheres (四个相等时间段中的一个，一年按照岁差和太阳回归点分成这四个时间段。这是按照太阳在地球围绕太阳旋转的路线上的赤道南北回归线的移动来划分的。在这四个阶段(春天、夏天、秋天和冬天)，不同地区有不同气候特点，并且在南北半球的时间正好相反。) |
| 季节性变化 | seasonal variation In time series, that part of the movement which is assigned to the effect of the seasons on the year (在一定时间内，受到每年的季节影响而产生移动的部分。) |
| 季节性模式 | seasonal pattern |
| 季节性生物节律 | seasonal biological rhythm |
| 季节性迁徙 | transhumance The seasonal migration of livestock to suitable grazing grounds (牲畜季节性地迁徙到合适的牧场。) |
| 季节性迁移 | seasonal migration The periodic movement of a population from one region or climate to another in accordance with the yearly cycle of weather and temperature changes (人口从一个地区或气候定期地迁移到另一个地区，这种移动按照天气和温度每年循环变化。) |
| 火灾季节 | fire season |
