seasonal

These early ancestors of modern Eurasians disperse into parts of the world that had more seasonal sunshine and much lower levels of sun radiation.(这些现代欧亚混血儿的早期祖先分散到世界各地，那里有更多的季节性日照和更低水平的太阳辐射。)

"It's a very seasonal place," Hedges said.(“这是一个季节性很强的地方，”赫奇斯说。)

Most seasonal hiring is done in early October.(多数季节性招聘是在10月初进行。)

IT HAS become a seasonal blood sport.(这都变成一场季度性的血腥运动了。)

One opinion is that the paintings were a record of seasonal migrations made by herds.(一种观点认为，这些画是兽群季节性迁徙的记录。)

The figures aren't adjusted for seasonal variations.(这些数字未作季节性变化调整。)

The food bars were offering a seasonal mince pie, which has never before happened in the history of half-time snackery.(食品吧提供了季节性的碎肉馅饼，这在半日制小吃店的历史上从未发生过。)

Extreme changes in daily and seasonal climates preceded the retreat of the seas back into the major ocean basins.(在海洋退回到主要的海洋盆地之前，每日天气和季节性气候发生了剧烈的变化。)

Then she read about seasonal affective disorder, a form of depression that occurs in fall and winter, and she saw the light—literally.(然后她读了关于季节性情感障碍的书，这是一种发生在秋天和冬天的抑郁症；而她真的看到了光。)

Generally, the reason for such seasonal back-and-forth movement is to seek resources that aren't available within a single area year-round.(一般来说，进行这种季节性往返迁移是为了寻找在一个地区无法全年获得的资源。)