我不否认英文

we can't deny the fact that the environment is being destroyed by human beings.

I refuse to acknowledge myself to be defeated!

有两种用法. 1. “不可否认”最好的翻译应该是 undeniable ,直接用在句子中作为连词就可以.例句：He is a good guy , but undeniable , he also has some shortcomings. 他是一个好男孩,但不可否认的是,他也有一些缺点. 2. There is no denying that + S + V ...（不可否认的...）例句：There is no denying that the qualities of our living have gone from bad to worse. 不可否认的,我们的生活品质已经每况愈下.

I don't admit defeat.

I don't confess I've lost.