Expectant mothers may not do work connected with radioactive matter.

怀孕女工不得做与发射性物质有关的工作。

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In 1903 Marie received her doctor's degree for her study on radioactive matter.

由于她在放射性物质方面的研究，玛丽于1903年获得了博士学位。

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Water and soil would have to be filtered many times to remove any radioactive matter.

水和土壤须经过多次过滤以消除放射性物质。

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Given its inherent risks, nuclear power has always been an exercise of mind over matter, in which human intellect seeks to harness the power of nuclear fission of radioactive materials.

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