那人如一条被踩踏了的蛇一般扭来扭去，嘴里吐出一层血红的泡沫。

The man writhed like a trampled snake, and a red foam bubbled from his lips.

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那些在她身后窥视的人低声说，那红字在屋内漆黑的过道上投下了一道血红的闪光。

It was whispered, by those who peered after her, that the scarlet letter threw a lurid gleam along the dark passageway of the interior.

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她很漂亮，有着光滑的曲线、白皙的皮肤和乌黑的头发，一只手拿着一支金箭，另一只手拿着一个血红的苹果。

She was beautiful with her smooth curves, fair skin and raven hair, holding a gold arrow in one hand and a blood red apple in the other.

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The way, in the simplest terms that cyanide can kill you, is it basically out-competes your oxygen for the heme in your blood.

氰化物可以杀掉你的最简单的一种方式基本上就是，将氧从你血液中,的血红素中挤出去。

麻省理工公开课 - 化学原理课程节选

They're red because they contain a special protein called hemoglobin which is very concentrated inside the cell.

红细胞的红色源于,其内部一种叫做血红蛋白的特殊蛋白质,血红蛋白在细胞内的浓度很高

耶鲁公开课 - 生物医学工程探索课程节选

One example of a very different cell is a red cell or red blood cell, these are the cells that give blood it's red color.

举个高度分化细胞的例子,红细胞,或称血红细胞,它们赋予了血液鲜红的色彩

耶鲁公开课 - 生物医学工程探索课程节选