Three decades passed.

三十年斗转星移。

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Two Iranian warships passed through Egypt's Suez Canal for the first time in more than three decades, en route to Syria.

两艘伊朗军舰在向叙利亚航行中经过埃及国有的苏伊士运河，这是三十多年来的第一次。

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The man who stood at the entrance to my new world passed away recently, and though I hadn't seen him in more than three decades, the news of his demise1) left me unexpectedly bereft2).

那个曾引我进入新世界的人，最近辞世了。 我已有三十多年没有见过他，然而，听到他离去的消息，我还是感到一种失去至亲的痛苦，这是我始料未及的。

youdao

Three decades have passed since the last serious American inflation was vanquished by Ronald Reagan and Paul Volcker.

FORBES: Is President Obama's Depression Coming Our Way?

Over the past three decades Congress not only has never passed any legislation to regulate climate change, but has specifically rejected legislation to give EPA the authority which it now claims.

FORBES: A Pivotal Court Challenge: America vs. the EPA

They also said it would be a break from more than two decades of precedent, which saw three dozen disaster-aid bills passed without offsets.

WSJ: Senate Clears $50.5 Billion Sandy Aid Bill