1. 漏；渗漏；泄漏
    If a container leaks, there is a hole or crack in it which lets a substance such as liquid or gas escape. You can also say that a container leaks a substance such as liquid or gas.

    e.g. The roof leaked...
           屋顶漏雨。
    e.g. The gas had apparently leaked from a cylinder...
           气体似乎由一汽缸漏出。

2. 裂缝；漏隙；漏洞
    A leak is a crack, hole, or other gap that a substance such as a liquid or gas can pass through.

    e.g. ...a leak in the radiator...
           暖气片上的一条裂缝
    e.g. In May engineers found a leak in a hydrogen fuel line.
           5月份工程师们在一条氢燃料管线上发现一条裂隙。

3. 走漏；泄露；透露
    If a secret document or piece of information leaks or is leaked, someone lets the public know about it.

    e.g. Last year, a civil servant was imprisoned for leaking a document to the press...
           去年，一名公务员因向报界泄露了一份文件而被判入狱。
    e.g. He revealed who leaked a confidential police report...
           他说出了泄露警方机密报告内容的人。