I felt the blood drain from my head.
我感觉血液从脑袋里流走。
Inversions can help clear the upper respiratory tract and drain secretions from the nose, allowing freshly oxygenated blood to flow into the oral cavity.
倒置体式能清理上呼吸道，排出鼻腔内的分泌物，让新鲜富氧的血液循环到口腔。
In the second frame he sits alongside clutching an antler, possibly to position the head after 'sticking' the animal - slitting its throat - to drain the blood and preserve the quality of the meat.
在第二张照片中他蹲下来抓住了鹿角，可能你是在讲动物割喉后放正它的头，放掉血保持肉质。
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