1. 证据；证物；证言
    Proof is a fact, argument, or piece of evidence which shows that something is definitely true or definitely exists.

    e.g. You have to have proof of residence in the state of Texas, such as a Texas ID card...
           你必须有在得克萨斯州的居住证明，比如得克萨斯身份证。
    e.g. This is not necessarily proof that he is wrong...
           这不一定就证明他是错的。

2. 校样；样张；初印稿
    In publishing, the proofs of a book, magazine, or article are a first copy of it that is printed so that mistakes can be corrected before more copies are printed and published.

    e.g. I'm correcting the proofs of the Spanish edition right now.
           我正在校正西班牙语版本的校样。

3. 标准酒精度
    Proof is used after a number of degrees or a percentage, when indicating the strength of a strong alcoholic drink such as whisky.

    e.g. ...a glass of Wild Turkey bourbon: 101 degrees proof.
           一杯威特基波旁威士忌：酒精度为101°

4. 不能穿透的；耐…的；能防…的
    If something or someone is proof against a particular thing, they cannot be damaged, harmed, or affected by it.

    e.g. The fortress was proof against the techniques of attack then in use...
           该防御工事能抵御当时所使用的各种进攻手段。
    e.g. His papers were proof against all but the most expert of scrutinies.
           他的论文几乎可以经受住最专业的审查。

5. 典型的例证；活生生的例子
    If you say that someone is living proof of something, you mean that their actions or personal qualities show that a particular fact is true or that a particular quality exists.

    e.g. He is living proof that some players just get better with age.
           有些运动员年纪越大状态越好，他就是个活生生的例子。

6. 正面例子
    To be proof positive of a particular fact or quality means to be evidence that it is true or that it exists.

    e.g. The Windermere Golf Club is proof positive that golf and ecology can co-exist in perfect harmony.
           温德米尔高尔夫俱乐部证明了高尔夫和生态能完全和谐共存。

7. burden of proof -> see burden
    the proof of the pudding is in the eating -> see pudding