Cǎoméi shì jìjiéxìng shuǐguǒ, zhǐ zài chūntiān shàngshì.
Strawberries are seasonal fruit, only available in spring.
Lǚyóuyè de jìjiéxìng bōdòng hěn míngxiǎn.
The tourism industry shows obvious seasonal fluctuations.
Nóngmíngōng cúnzài míngxiǎn de jìjiéxìng liúdòng xiànxiàng.
Migrant workers show a clear pattern of seasonal movement.