Wǒmen bìxū kǎolǜ dào tā hěn niánqīng. We must take into account the fact that he is young.
Wǒmen bìxū shèfǎ dǎpò zhège jiāngjú. We must try to break the deadlock.
Wǒmen bìxū bǎochí jiātíng chuántǒng. We must keep up the family traditions.
You'll have to start at once.
Zhège yuèdǐ qián, wǒmen bìxū jiāo bàogào. We have to turn in our reports by the end of this month.
Nǐ bìxū cóng shībài zhōng xīqǔ jiàoxùn. You must learn from mistakes.
Shèxiàngjī duì wǒ ér yán shì bìxūpǐn. The camera was essential for me.
Chúle yīngyǔ, zhège xuéxiào de suǒyǒu xuéshēng bìxū duō xué yīmén wàiyǔ. Any student of this school must learn one more foreign language besides English.
Tāmen měitiān bìxū gōngzuò 8 xiǎoshí. They're required to work eight hours every day.
Wǒmen bìxū zūnshǒu guīzé. We must conform to the rules.