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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To cause to be out of or short of breath.

使喘息使气急或使呼吸困难。

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