Three years earlier Jane had observed chimps fishing for termites with plant stems.

三年前珍妮发现大猩猩用植物茎吊食白蚁。

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Fan Ping said that he was 37 years old and that his mother had died three years earlier.

范平说他今年三十七岁，母亲三年多以前就去世了。

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Ford, which had mortgaged itself to the hilt three years earlier, only narrowly escaped the same fate.

福特公司，三年前就把自己抵押了个精光，勉强逃脱了这一厄运。

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It was nineteen thirty-three. Only six years earlier Charles Lindburgh became famous around the world as the first person to fly alone across the Atlantic Ocean.

VOA: special.2011.04.27

The sensitivity indicates detection in humans up to three years earlier than a mammogram can.

FORBES: Breast Exams: Mammography Is Not The Only Game In Town

The presbytery had been contacted by concerned members of the congregation three years earlier.

BBC: The Reverend Stephen Dickinson

Three years earlier, he lost his wife in a car accident that he narrowly survived.

NEWYORKER: Late and Soon