默默无闻的英文：
[Literal Meaning]
quiet/not/known
quiet and unknown

[解释]
没有什么人知道。

[Explanation]
unknown to the public

[例子]
原来默默无闻的他因为在网上发表了一部小说而很快出名了。

[Example]
He who has been unknown to the public becomes famous for his publication of his novel on the Internet.

[英文等价词]
cut no figure
in obscurity
in the shade
unknown to fame

Sink into obscurity
变成默默无闻

Relapse into oBscurity
变得默默无闻

Live in obscurity
过默默无闻的生活

Don Corleone received everyone—rich and poor, powerful and humble—with an equal show of love.
邓·考利昂老头子接待每一个人——富人和穷人，有权有势的人和默默无闻的人——都一视同仁。

Content to live in obscurity
安于默默无闻的生活

He is content of living in obscurity || He is content with living in obscurity || He is content to live in obscurity
他满足于默默无闻的生活

He is an obscure Chinese novelist.
他是个默默无闻的中国小说家。

Thus I Pass by And one Unknown And gone
我就这样默默无闻地死去

After retirement，grandpa lived an inglorious life.
退休之后，外公就过着默默无闻的生活。

He has risen from obscurity to international fame.
他已从默默无闻之辈而成为国际上的名人。