She began to vomit blood a few days before she died.

她在去世前几天开始吐血。

《柯林斯英汉双解大词典》

Within 20 years, it may be possible to produce two million pints of artificial blood a year -enough to satisfy the nation's medical needs.

在未来20年内，英国人造血的年产量将可能达到200万品脱(约113万升)，足以满足全国的医疗需求。

youdao

If your heart is deprived of adequate amounts of blood, a heart attack can occur.

如果你的心脏被剥夺了过多的血液，就可能会引起心脏病发作。

youdao

Fire on her lips, Cherokee in her blood and Zulu in her hips, she's a Goddess, who has never been told."

VOA: special.2009.04.27

Now, we're not thinking about total antibody concentration because you already have a lot of antibodies circulating within your blood and in your fluids.

现在,我们先不考虑抗体总浓度,因为你的体内已存在许多抗体,在血液以及体液中循环

耶鲁公开课 - 生物医学工程探索课程节选

We'll talk in a minute about stem cells that are involved in generation of blood and they develop and they live in the bone marrow.

我们一会儿要说到,和血细胞再生有关的干细胞,它们发育并储存在骨髓中

耶鲁公开课 - 生物医学工程探索课程节选

The reason it typically takes two days to conduct a blood test and it can take as long as five is that once a nurse takes a blood sample, it must be sent to a central lab where the blood is cultured or amplified in order to let any infections grow and then cleaned.

FORBES: MIT Spinoff, T2 Biosystems, Hopes To Slash Deadly Hospital Infection Deaths

The woman, who lives in Qatar and plans to return home in coming weeks, was there at 19 when she was diagnosed with a blood clot in a major vein to the intestine requiring transplant surgery.

NPR: 5-Organ Transplant Patient Gives Birth: Baby Girl

They came up with a promising candidate, tweaked it so it would be absorbed in the blood as a pill and then performed the key experiment testing it in mice to see if it would shrink tumors.

WSJ: New Medical Strides Against Prostate Cancer