to say that something is not true

He will not confirm or deny the allegations. 对那些指控他将不置可否。

[ + that ] Neil denies that he broke the window, but I'm sure he did. 尼尔不承认是他打破了窗户，但我敢肯定是他干的。

[ + -ing verb ] Neil denies breaking the window. 尼尔不承认是他打破了窗户。

it is true

There's no denying that this has been a difficult year for the company. 今年对该公司而言是非常困难的一年，这一点毋庸置疑。

He's undoubtedly a tricky character but there's no denying that he can sing.

Whatever you think of her management style, there's no denying she's turned the company around.

It's a great series, but there's no denying that it's extremely sad.

There's no denying that this is a superb meal.

to not allow someone to have or do something

Her request for time off work was denied. 她的休假请求未获得批准。

No one should be denied a good education./A good education should be denied to no one. 任何人都不能被剥夺接受良好教育的权利。

[ + two objects ] The goalkeeper denied him his third goal. 守门员粉碎了他攻入第3球的希望。

I was denied the opportunity of learning French at school. 我上学时没有机会学习法语。

to not admit that you have knowledge, responsibility, feelings, etc.

He denied all responsibility for the rumours which have been circulating. 他对四处传播的谣言拒绝承担责任。

Even under torture, he refused to deny his beliefs/faith. 即使遭受酷刑，他也决不放弃自己的信念／信仰。

to not allow yourself to have or do things

Many parents deny themselves so that their children can have the best. 为了让孩子们生活得称心如意，很多父母宁肯自己节衣缩食。

Come on, join us for some dessert. Don't deny yourself!

He has denied himself the opportunity to meet someone and fall in love.

I think she feels morally superior when she denies herself.

to refuse to admit that you have any connection with something or someone

She has denied her family and refuses to have any contact with them. 她和家里断绝了一切关系，不愿跟家人再有联系。