必要 (bì yào) means “necessary; essential; indispensable; required”. It is an HSK 5 Chinese word in the HSK 3.0 vocabulary.
为了提高工作效率,改革现有的制度是很必要的。
Wèile tígāo gōngzuò xiàolǜ, gǎigé xiànyǒu de zhìdù shì hěn bìyào de.
To improve work efficiency, reforming the existing system is very necessary.
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