Concerns over radiation escaping from the test site have increased with each explosion.

RIVERS：随着每次爆炸，对从试验场逸出的辐射的担忧都在增加。

Researchers can study the garbage left on the moon to see how its materials weathered the radiation and vacuum of space over time.

研究人员可以通过研究遗留在月球上的垃圾，观察其材料是如何在时间的流逝中经受住太空的辐射和真空环境的影响。