•He was briefly famous in his twenties but then sank into obscurity.他在20来岁时曾一度小有名气，但随后便湮没无闻了。

•He rose from relative obscurity to worldwide recognition.他从默默无闻一下变成世界闻名。

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•The story is convoluted and opaque, often to the point of total obscurity.这则故事晦涩难懂，常常令人一头雾水。