seasonal ports

例句：

1. 1. The seasonal flowers bloom during the spring and summer months.
   季节性花卉在春天和夏天开花。
2. 2. This plant is seasonal and needs to be planted in the fall.
   这种植物是季节性的，需要在秋天种植。
3. 3. The farmers rely on the harvest of seasonal crops for their livelihood.
   农民依靠季节性作物的收获来维持生计。