leak out
1．go out through a hole 漏出
The water is leaking out of the kettle．这个壶在漏水。
The oil has leaked out into the surrounding soil．油已漏到周围的土地里。
2．become known（probably by some unofficial means）；become public 泄露；为公众所知（可能是通过非官方手段）
It was plain that the news of his engagement had leaked out．很明显，他的订婚消息已经泄露出去了。
They have leaked the information out to the press．他们已把情报透露给新闻界了。