不注意饮食，身体势必会出问题。

Bù zhùyì yǐnshí, shēntǐ shìbì huì chū wèntí.

If you don't pay attention to your diet, your health will inevitably suffer.

全球气温持续上升，势必影响生态环境。

Quánqiú qìwēn chíxù shàngshēng, shìbì yǐngxiǎng shēngtài huánjìng.

With global temperatures continuing to rise, the ecological environment will inevitably be affected.

如果不及时改革，企业势必面临更大的困难。

Rúguǒ bù jíshí gǎigé, qǐyè shìbì miànlín gèng dà de kùnnan.

If reforms aren't carried out in time, the company will inevitably face even greater difficulties.