不言而喻，定期锻炼对健康有益。

___It ___goes ___without ___saying that regular exercise is beneficial for health.

不言而喻，我们必须尊重彼此的意见。

___It ___goes ___without ___saying that we must respect each other's opinions.

不言而喻，良好的教育会打开许多门路。

___It ___goes ___without ___saying that a good education opens many doors.