这持续了四年，我看到了这个家庭的变化。

This lasted four years. I had watched the family change.

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雅妮娜-迪-乔瓦尼和布鲁诺-吉禾登曾是两位战地记者。1993年，他们在萨拉热窝认识并相爱，是时这座城市将要陷入持续近四年的攻城之中。

JANINE DI GIOVANNI and Bruno Girodon were war reporters who met and fell in love in Sarajevo in 1993, just as the city was settling into the siege that would last nearly four years.

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目前，该中心的研究员们已经研究了项目中的80位病人。 这个项目一直持续了四年，它是在认知紊乱的早期症状时对老年痴呆症的诊断。

Researchers at the MADRC have so far studied 80 patients in a project that has been going on for four years on the diagnosis of Alzheimer's at the earliest sign of cognitive dysfunction.

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