to speak for itself
01
to be so clear or obvious that no further explanation is needed
例子
The quality of the product speaks for itself; the reviews are overwhelmingly positive.
产品的质量不言而喻 ; 评论绝大多数是积极的。
Her impressive performance really spoke for itself during the job interview.
她在工作面试中令人印象深刻的表现真的不言而喻。
