Solid low-level waste will be disposed of deep underground.

低放射性固体废物将被弃置在地下深处。

《柯林斯英汉双解大词典》

High-level waste is the most dangerous because it can melt through containers and is so radioactive it would be fatal if someone was near it for a few days.

高放射性废料是最危险的，因为它能熔穿容器，而且放射性强到在它旁边的人只需几天就有致命危险。

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Today, high-level waste is dealt with by cooling it in water for several years and then mixing it into a molten glass, which is poured into steel containers.

如今，高放射性废料的处理方式是将它在水中冷却数年，然后将其混入熔融态的玻璃中，接着倒入铁质容器。

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Chemical reprocessing at Hanford would generate 22, 000 tonnes of high-level waste and 500, 000 tonnes of low-level waste.

ECONOMIST: Nuclear waste

They contain another, much less radioactive waste called transuranic waste (TRU waste) that is thousands of times less radioactive than high-level waste.

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The bags, which contained waste such as plastic, wood and metal, should have been sent to the Low Level Waste Repository, at Drigg.

BBC: Sellafield Nuclear Plant