Cyanosis usually occurs when oxygen levels in the blood drop below 90 percent.

黄萎病通常在血液中氧气水平降到90%以下时发生。

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Luo after harm outside the ten city head and stop under, be suspended to half empty, start to be suffused with the double eyes of blood drop to twinkle congealed ray of light.

洛继伤在城头十数步外停下，悬浮于半空，泛起血滴的双目闪动着冷凝的光芒。

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Uronoscopy:urine gradually cloudy, and will appear the floe objects, Urine Protein and urine shallow blood drop; The 24hour ration volume of Urine Protein will gradually reduced.

尿检查：尿逐渐混浊，并会出现絮状物，尿蛋白、尿浅血逐渐减少；24小时尿蛋白定量会逐渐降低；

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A circular blood drop could mean the blood fell directly downward.

VOA: special.2010.05.05

Being so caught up, So mastered by the brute blood of the air, Did she put on his knowledge with his power Before the indifferent beak could let her drop?

就这样被征服，这样被天空中野性的血液欺凌，她是否借他之力获得了知识,在那一意孤行的嘴放她下来之前？

耶鲁公开课 - 现代诗歌课程节选

The result is a five to twenty percent drop in the amount of oxygen in the blood.

VOA: special.2009.07.14

Two patients with especially advanced ALL experienced what Dr. Brentjens termed a "shake and bake response" significant fever and a drop in blood pressure that resulted in their admission to intensive care.

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