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.
这些标记了7的塑料产品不应该被微波加热或者接触热水，因为热量能够溶解bpa而导致人饮用它。
These plastics should never be microwaved or exposed to hot liquids-heat can dissolve BPA into what you're drinking.
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