There is no denying the fact that air pollution is an extremely serious problem and we should take strong measures to deal with it.

不可否认，空气污染是一个极其严重的问题，我们应该采取有力措施来解决它。

youdao

There is no denying the fact that air pollution is an extremely serious problem: the city authorities should take strong measures to deal with it.

不可否认，空气污染是一个极其严重的问题：市政部门应该采取有力措施来解决。

youdao

There is no denying the fact that air pollution is an extremely serious problem: the city authorities should take strong measures to deal with it.

不可否认，空气污染是一个极其严重的问题：市政部门应该采取有力措施来解决。

youdao