不用说，锻炼对健康有益。

___It ___goes ___without ___saying that exercise is beneficial for health.

不用说，我会支持这个项目。

___It ___goes ___without ___saying that I will support the project.

不用说，守时在这家公司很受重视。

___It ___goes ___without ___saying that punctuality is valued in this company.