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1·The radioactive debris is produced when the core is exposed above the coolant water level and overheats.

当核心暴露于冷却水位以上并过热，那放射性碎片就会产生。

2·Towns near Fukushima have responded cautiously to plans to build temporary storage sites for massive quantities of radioactive debris generated by the accident.

因为这次爆炸产生了大量的放射性碎片导致福岛周边的城镇计划建立一些临时安置点时非常的谨慎小心。

3·In 1978, a nuclear - powered Soviet satellite plunged through earth 's atmosphere and disintegrated, scattering radioactive debris over parts of northern Canada.

1978年的今天，一颗苏联造的以核能为动力的卫星在穿过大气层时候发生砸裂，其具有发射性的部分残劾散落在加拿大北部。

4·Hydrogen explosions at four of the buildings at the six-reactor complex in the first few days destroyed some of their roofs and walls and scattered radioactive debris.

最开始的时候，氢气在四座大楼的6个综合核反应堆中爆炸，致使屋顶和墙体损毁，带辐射的残骸四处飞溅。

5·However, it's highly unlikely the tsunami-generated debris would be contaminated with radioactive material, according to the National Oceanic and Atmospheric Administration's Marine debris program.

然而，根据国家海洋和大气管理局的海洋废弃物方案，海啸产生的碎片受放射性物质污染是非常不可能的。

6·32 radioactive sources were buried under debris during the quake. So far, 30 have been recovered by authorities, and the other 2 have been located.

32处放射性污染源在地震中被埋于废墟下，至今已找到30处，其余2处也已被定位。

7·Where space debris or radioactive or chemical pollution has resulted, international liability for space environmental damage is established.

只要空间活动产生了空间碎片或放射性、化学性污染，就产生空间活动主体的国际责任。