But that signal is too weak. We can't see it against the universe's background radiation.
但是信号太弱了。在宇宙辐射背景下,我们根本看不到它发出的辐射。
BBC Ideas
This light is known as the cosmic microwave background radiation.
这种光被称为宇宙微波背景辐射。
VOA Special 2019年10月合集
They say he recognized the importance of the cosmic radiation background that was left over from a huge explosion billions of years ago.
他们说皮布尔斯认识到了数十亿年前一场大爆炸留下的宇宙辐射背景的重要性。
传说之境
By the time that the core was sealed away inside over 26 days worth of additional natural background radiation had already been unleashed onto the planet.
当堆芯被密封在里面时,有超过 26 天的额外自然本底辐射已经被释放到地球上。
TED演讲(视频版)双语精选
But we set off to measure the Big Bang, and we measured the map of the cosmic microwave background radiation, using millimeter waves and it's the entire sky wrapped around on to an oval so you can see it.
Background radiation is the ubiquitous ionizing radiation present in the environment. Background radiation originates from a variety of sources, both natural and artificial. Sources include cosmic radiation, naturally occurring radioactive materials such as radon, and fallout from nuclear weapons testing and nuclear accidents.