In contrast, when 21-centimeter radiation emerged from hydrogen atoms, nothing blocked its propagation through space, so it traces the gas distribution without such blurring.是什么意思_In contrast, when 21-centimeter radiation emerged from hydrogen atoms, nothing blocked its propagation through space, so it traces the gas distribution without such blurring.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句