Examples
tā men他们wèi shén me为什么fǒu jué否决le了nǐ你de的jiàn yì建议ne呢？
他们为什么否决了你的建议呢？
Why did they turn down your proposal?
美国总统有权否决与退回法案。
The President of the United States has the power to veto and send back legislation.
我从来没否决过我对你有感情。
I've never denied that I have feelings for you.