字典解释

• Seasonal 是形容词，意思为“季节性的，节令性的”，一般用于形容某个季节出现的物产，现象等。

例句

比如说某个地区一般只是夏季下雨，这种雨就是季节性的。
This area is characterized by seasonal rains.

常见的时令性水果可以说seasonal fruit
Seasonal fruit is widely considered one of the healthiest foods.

Seasonal也可以用来形容工作，有的工作分为忙时和闲时，比如水果的种植和收获都是忙时，每年都有拉美人去美国采摘水果
Every year Latin Americans travel to the US to do seasonal work, such as picking fruit.

或

Seasonal fruit pickers travel to America every year and send paychecks(付薪水的支票，薪水) to their families back home.

每年的感恩节和圣诞节，美国的各大商场为应付购物潮，都会雇佣临时工

As firms struggle with seasonal hiring, Amazon turns to automation.
JC Penney, a department-store chain(这里的chain表示的是连锁店，连锁集团), is luring（引诱） seasonal workers by entering them in a raffle（抽奖活动） for gifts and holidays.

• 牛津字典另外补充了可以形容各种工作的形容词：

  
  

练习

翻译：很多旅游的目的地都有淡季和旺季，旺季往往会雇佣不少季节性工人
Many tourist destinations have busy seasons and off seasons, during the busy season, tourist department would hire amount of seasonal workers.

参考翻译：
High season and low season mark many tourist destinations, which tend to hire a number of seasonal workers.

或

Many tourist destinations have high season and low season, and tend to hire a decent amount of seasonal labor during high season.

场景：在描述一个城市季节分明的时候，可以用seasonal形容
例子：The wether in my city is seasonal. In the spring I could enjoy the bloom of flowers, the breeze flow my face which make me feel refreshing.