2 sentences

1. 我是一名季节性工人。

   wǒ shì yī míng jì​jié​xìng gōng​rén.

   I'm a seasonal worker.

   Source: OpenSubtitles

2. 这种水果有很强的季节性。

   zhè zhǒng shuǐ​guǒ yǒu hěn qiáng de jì​jié​xìng.

   This fruit is highly seasonal.

   Source: Dong Chinese Dictionary