"This has never happened to me… never in my life," Markarian said of having three players injured at the same time.

“这样的情况还从来没有在我身上发生过。” 谈到三名球员同时受伤，马卡里安有些惊讶。

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The dual AGN of Markarian 739 is the second-closest known, both in terms of distance from one another and distance from Earth.

马尔卡良双739的活动星系核是第二已知的最近，无论是在彼此的距离上，从地球的距离。

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For decades, astronomers have known that the eastern nucleus of Markarian 739 contains a black hole that is actively accreting matter and generating prodigious energy.

几十年来，天文学家已经知道了马尔卡良东部的原子核包含739黑洞是积极的，共生的物质和产生巨大的能量。

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The culprit is a staggering flare-up of Markarian 421, a "blazar" that hosts a supermassive black hole.

BBC: Blazar Markarian 421's flare-up is cosmic coincidence

The name of Markarian 421 is cropping up in many talks at the American Physical Society meeting in Denver.

BBC: Blazar Markarian 421's flare-up is cosmic coincidence

Markarian 421 was already in the known catalogue of blazars, being somewhat variable and having had something of a brightening, or flare, in 1996.

BBC: Blazar Markarian 421's flare-up is cosmic coincidence