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。

youdao

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。

youdao