Meaning of bù dé bù:
bù dé bù
不得不
Verb
have to
Wǒ bù dé bù qù cānjiā huìyì.
我不得不去参加会议。
I have to attend the meeting.
Adverb
have no choice or option but to; cannot but; can't help it; can't avoid
Yóuyú tiānqì èliè, bǐsài bèi bùdébù qǔxiāo.
由于天气恶劣，比赛被不得不取消。
Due to the bad weather, the game had to be canceled.
Yóuyú dàyǔ, wǒmen bùdébù qǔxiāo lǚxíng.
由于大雨，我们不得不取消旅行。
Due to the heavy rain, we cannot but cancel the trip.
Xià yǔ le, wǒmen bùdé bù qǔxiāo yěcān.
下雨了，我们不得不取消野餐。
It rained, so we can't help but cancel the picnic.
yóuyú tiānqì yuányīn, wǒmen bùdébù qǐxiāo lǚxíng.
由于天气原因，我们不得不取消旅行。
Due to weather reasons, we can't avoid canceling the trip.
