Because the blueberry wasn't domesticated until just about a century ago.

蓝莓是一世纪前才被驯化的。

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MDMA was first synthesised almost a century ago but was little noticed until the 1960s when young American chemists began to ingest it.

MDMA已于百多年前首次人工合成，然闻者盖寡，及至上世纪六十年代，一年轻美国化学家始而食之。

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Half of a century ago, townsmen only accounted for a third of world population, but it's predicted to reach over a half until 2005.

半个世纪以前，城市居民只约占世界人口的三分之一，但到2005年，城市居民预计达到一半以上。

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But this idea and this kind of government was a product of the Founding Fathers, and it lasted only until about a century ago.

FORBES: The Actual State of the Union

Until a third of a century ago the New York Stock Exchange rigged prices.

FORBES: Trading Frenzy

Until little more than a century ago, hunters from these valleys would make a point of refusing to kill marmots, and shepherds were said to shelter these creatures beneath their huts.

BBC: Legends of the Italian Dolomites