HSK 6
Cǎoméi shì jìjiéxìng shuǐguǒ, zhǐ zài chūntiān shàngshì.
Strawberries are seasonal fruit, only available in spring.
HSK 7-9
Lǚyóuyè de jìjiéxìng bōdòng hěn míngxiǎn.
The tourism industry shows obvious seasonal fluctuations.
HSK 7-9
Nóngmíngōng cúnzài míngxiǎn de jìjiéxìng liúdòng xiànxiàng.
Migrant workers show a clear pattern of seasonal movement.
