必然 (bì rán) means “inevitable; certain; necessity”. It is an HSK 5 Chinese word in the HSK 3.0 vocabulary.
如果继续破坏环境,人类将面临必然的灾难。
Rúguǒ jìxù pòhuài huánjìng, rénlèi jiāng miànlín bìrán de zāinàn.
If we continue to destroy the environment, humanity will face inevitable disaster.
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