After Henri Becquerel discovered radioactivity with uranium in 1896, scientists sought a way to measure it.

1896 年， 亨利·贝克勒尔发现铀具有放射性， 此后，科学家们开始寻找测量方法。

Later that year, Pierre Curie and Henri Becquerel were nominated for the Nobel Prize in physics, but Marie was overlooked.

那年晚些时候， 皮埃尔· 居里和亨利·贝克勒尔获得诺贝尔物理学奖提名，但玛丽却被忽视了。

In Paris, physicist Henri Becquerel accidentally discovers during an experiment that uranium leaves a trace -- or darkens -- a photographic plate without any other light source.

在巴黎，物理学家亨利·贝克勒尔在一次实验中意外发现， 在没有任何其他光源的情况下， 铀会在照相底片上留下痕迹， 或者说使底片变暗。

Natural radioactivity was first discovered by Henri Becquerel, who observed how a chunk of mineral that contained uranium affected a photographic plate that was covered up by paper.

Henri Becquerel 首先发现了天然放射性，他观察了一大块含有铀的矿物如何影响被纸覆盖的感光板。