They discovered two kinds of radioactive matter - --- polonium and radium.

他们发现两种类型的放射性物质 ---- 钋和镭.

互联网

It is prohibited to discharge waste water containing high - level radioactive matter into the sea.

含强放射性物质的废水,禁止向海域排放.

互联网

Radioactive matter is dangerous to work with because it has a bad effect on the blood.

从事放射性物质工作是危险的,因为它对血液有不良影响.

互联网

Article 19. It is prohibited to discharge waste water containing high - level radioactive matter into the sea.

第十九条含强放射性物质的废水,禁止向海域排放.

互联网