To infuse its lethal venom into the bloodstream, a cobra must turn its head, squeezing out poison that's connected to its fangs.
为了将剧毒的毒液注入人的血液，眼镜蛇必须将头竖起挤出毒牙里的毒液。
To infuse its lethal venom into the bloodstream, a cobra must turn its head, squeezing out poison that's connected to its fangs.
为了将剧毒的毒液注入人的血液，眼镜蛇必须将头竖起挤出毒牙里的毒液。
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