Nuclear radiation has a certain mystery about it, partly because it cannot be detected by human senses.
核辐射这种现象多少有点神秘，其部分原因是人类的官能无法觉察到它的存在。
Nnuclear radiation has a certain mystery about it, partly because it cannot be detected by human senses.
核辐射这种现象多少有些神秘，其部分原因是人类的官能无法觉察到它的存在。
Although radiation cannot be detected by the senses(sight, smell, etc.), it is easily detected by scientistswith sophisticated instruments that can detect even the smallest levels ofradiation.
尽管射线不能被感官（像视觉、嗅觉）所检测到 ，但是可以被科学家用智能仪器检测到，甚至是很微小的的量。
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