seasonality

例句：

1. 1.The weather is quite seasonal in this region.
   这个地区的天气相当季节性。
2. 2. The plant's growth cycle is highly seasonal.
   这种植物的生长周期非常季节性。
3. 3. The agricultural seasonality has a significant impact on the economy.
   农业的季节性对经济有显著影响。