His face was covered in blood.

他满脸是血。

《牛津词典》

Straining to lift heavy weights can lead to a rise in blood pressure.

用尽全身力气举起重物会导致血压升高。

《柯林斯英汉双解大词典》

Experiments have also cast serious doubt on the belief that yawning is triggered by a drop in blood oxygen or a rise in blood carbon dioxide.

对于打哈欠是由血液中的氧气减少或血液中的二氧化碳增加引起的这种观点，一些实验也同样提出了严重的质疑。

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Studies suggest that people who are easily stressed develop blockages in blood passageways faster than other people.

VOA: special.2009.03.24

In some foods, those with a high glycemic index create a spike in blood sugar.

在一些食物中,一些血糖指数高的食物,会形成一个血糖峰值

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Now the two things to notice about this are the high spike that you have out here which occurs very rapidly and then the rapid decline in blood sugar, and insulin is involved in this whole reaction.

有两个需要注意的事情是,你们在这看到的急剧变化的曲线代表着,迅速上升和迅速下降的血糖,另外胰岛素也随之发生变化

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Your classmates make sacrifices in blood, sweat, tears to represent this school show your support!

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Fine if you are ready when your bluff is called to pay in blood.

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As an example, a serving of white rice has nearly the same effect as eating pure table sugar a rapid, high spike in blood sugar.

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