If you're experiencing crushing chest pain with or without pain in your left arm, are short of breath, or have a sense of impending doom, you may be having a heart attack.

如果你遇到伴有左手臂疼痛的强烈胸痛，或仅仅是强烈的胸痛，呼吸短促，或休克，你可能是心脏病发作了。

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The arm combinations are used in their entirety to cover all ranges of attack and defense.

它用各种手部动作的不同组合运用形成进攻和防守。

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To evaluate the defense effectiveness of a radar site with decoys against the attack of ARM, a calculation method based on the transfer probability matrix of the Markov link is given.

为了评定一个布置有诱饵的雷达阵地抗反辐射导弹（ARM）攻击的防御效能，提出了采用马尔可夫链的转移概率矩阵进行计算的方法。

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In a report issued Monday, the Kabul-based Afghanistan Rights Monitors (ARM) says that up 70 civilians were killed in the Kunduz attack while the rest were armed militants.

VOA: standard.2009.09.07

West Point grad Dawn Halfaker, who retired after losing her right arm in a 2004 grenade attack in Iraq, tried and failed to navigate the system.

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It is now working on a modification that will arm malarial mosquitoes with antibodies to attack the parasites.

BBC: Venom to arm mosquito against malaria

Alfi survived the attack with a broken arm.

NEWYORKER: The Rebellion Within