proof
[pruf]
n.
证明;
校样;
检验;
（酒的）标准酒精度;
例句:
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He has had to eat his words about the company being recession-proof.
他不得不收回他说过的公司能免受经济衰退影响的话。
来自柯林斯例句
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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。
来自柯林斯例句
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Training is worthless unless there is proof that it works.
除非能证明训练有效，否则就是白搭。
来自柯林斯例句
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His life was saved by a quarter-inch-thick bullet-proof steel screen.
多亏一块1/4英寸厚的防弹钢板，他才捡了条命。
来自柯林斯例句
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"We need proof, sir." Another pause. Then, "Very well."
“我们需要证据，先生。”又是一个短暂停顿。然后，“那好吧。”
来自柯林斯例句