从天而降: drop from the clouds; come down from heaven; come from above; descend from heaven to earth; descend [appear] out of the blue; fall from the sky; sudden unexpected arrival; very unexpectedl
亿万: hundreds of millions; millons upon millons 短语和例子亿万劳苦大众 the toiling millions; 亿万人民 hundreds of millions of people; the people in their hundreds of millions; 亿万富翁 billionaire