Although it has been long, the Sino-Russian relationship has had more than its share of ups and downs.
It has been long thought that this ability was innate, rather than learned, but the Duke researchers observed the mouse song system and were surprised to see that it included a motor cortex region active during singing.
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And though it has been long established that teenagers who have good communication with their parents are more likely to resist negative peer pressure, new research shows that it is a boy's mother who is the most influential when it comes to risky behavior, not only with alcohol and drugs but also in preventing both early and unprotected sex.
It has been a long battle for the villagers of Blisland to get their new facilities but it has been worth it.
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It has been a long war, and the American public has understandably lost interest, but these soldiers have not lost their devotion to the mission or their country.
It has been a long and, at times, bumpy road for the couple to the altar.
"It has been a long time coming, " he said, describing his move as a "dream".
It has been a long and uphill climb getting people to recognize how hypothermia should be treated.
As Ruth says, it has been a long journey for her and I'm with her all the way.
It has been a long held view of the council that climbers accept the pursuit is potentially dangerous.
It has been a long journey since 27 August 1982, when The Warlock of Firetop Mountain was published.
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It has been a long time since the government produced munitions, for example.
It has been a long time since I've visited the Beijing Film Academy.
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It has been a long and strong bond, cemented by the country's strong reliance on the European export market.
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"It has been a long time coming, " in the words of Neil Saunders, managing director of retail consultancy Conlumino.
It has been a long week, and I am ready for the weekend.
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'It has been a long time since I've seen any team get six hits in a row with two outs.
For a city generally regarded as an early adopter of trends, it has been a long wait for Mumbai to get its first microbrewery.
It has been a long, protracted transfer for Middlesbrough but Southgate believes it was worth the effort in signing the Brazilian from Heerenveen.
It has been a long season with lots of ups and downs so to finally get your hands on the trophy is massive.
It has been a long journey for the new Lord Kinnock from his earliest days as a rebellious youngster in the south Wales valleys.
It has been a long seven years since "Arrested Development" was on Fox, but the Bluth family's revival on Netflix is almost upon us.
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It has been so long since the Sox and the Mets last met that Tuesday marked third baseman David Wright's first game ever against Chicago.
It has been a long journey, but, he reveals, he now faces each day with deep gratitude, and continues to draw inspiration from the great musicians around him.
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It has been a long but good week, and I am going to finish strong from the first minute of the day all the way to the last.
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"It has been a long-time dream for all optical researchers to reach the terabit per second mark, " says Kuwahara Hideo, one of the 20 researchers at the Fujitsu lab.
"It has been a long and extremely difficult year for these men's families, who only wish to have their loved ones back home, safe from their ordeal, " he said.
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