1. The fact that water is composed of hydrogen and oxygen is undeniable. 水是由氢和氧化合而成这一事实是无可否认的。
2. In fact, smoking brings damages to the environment and public health is also an undeniable problem. 事实上,吸烟带来环境和人体健康的破坏也是一个不可争辩的问题。
3. It is undeniable that, regardless of the outcome of Department what, who can deny this love that feeling so real? 不可否认的是,爱之深处无论结局是什么,谁能否定这爱之情感的那份真切呢?