One final irony: in 1950, at age 82, Millikan published his Autobiography, with Chapter 9 entitled simply "the Experimental Proof of the Existence of the Photon — Einstein's Photoelectric Equation."

最后一件讽刺的事情发生在1950年，82岁的密立根发表了他的自传，其中第九章的标题为“光子存在的实验验证—爱因斯坦光电方程”“the Experimental Proof of the Existence of the photon—einsteins Photoelectric Equation .”。

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I am proof that it isn’t that easy to die, because from the age of 15, well into my twenties, I was working on dying. Most addicts are.

我证明了死不是那么容易的一件事，因为从我15岁开始一直到二十几岁， 我一直徘徊在生死边缘，就像大多数瘾君子一样。

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That said, most gay Americans above a certain age have only to dip into their memories for proof that their country has grown dramatically more tolerant.

那也就是说，多数基于一定年龄的美国同性恋者仅沉浸在他们的想象中论证自己的国度戏剧性的变得更为包容。

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The CARD Act also requires that students under age 21 show proof of sufficient income or get a co-signer to obtain credit.

WSJ: Cards Return to Campus

Sue Ramsey from Sinn Fein said a young woman working in an off-licence had told her she felt intimidated when asking for proof of age.

BBC: Northern Ireland Assembly

Shop manager Gary Singleton, on duty at the checkout, rang the bottle of rose wine through his till without asking for any ID or proof of age.

BBC: Lidl overturns five-day alcohol ban at Govanhill store