这个标记就在宇宙微波背景之中，就是充满整个宇宙的射线。
The imprint in question is in the cosmic microwave background (CMB). This is a bath of radiation that fills the whole universe.
这个标记就在宇宙微波背景之中，就是充满整个宇宙的射线。
The imprint in question is in the cosmic microwave background (CMB).this is a bath of radiation that fills the whole universe.
在这样的深度（实验）将有助于减少宇宙射线中的渺子介子造成的背景信号。
Going this deep would help reduce the background signals from cosmic ray muon particles.
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