It all began more than three decades ago when Lovelock devised the electron-capture detector.

这一切是从超过30年前Lovelock设计了一个电子捕捉探测仪开始的。

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In his more than three decades as an examiner, he had never seen a set of fingerprints like this.

作为一名从业超过30年的指纹检验师，他从来没有见过这种情况。

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The report shows "unequivocally that the world is warming and has been for more than three decades".

该报告表示“毫无疑问，世界正在变暖，而且已持续30多年了。”

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People in developing countries today are consuming nearly twice as much milk, more than three times as much meat and five times as many eggs as they did five decades ago, according to the FAO report.

VOA: standard.2010.02.22

Jack Keane and Joe Hoar, each served in uniform for more than three decades.

NPR: Criticism of Rumsfeld Sparks Debate in Military

But Dr. Ira Longini has spent more than three decades trying to do just that.

CNN: The story

Frugal by reputation, he apparently lived in the same house for more than three decades.

FORBES: Singapore's Richest Person, Dead at 82