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The tissues become engorged with blood.

组织开始充血。

《柯林斯英汉双解大词典》

They come to the university to provide us with blood samples to be interviewed and to help us to carry out a whole range of research.

他们来到大学，给我们提供采访所需的血样，帮助我们开展一系列的研究。

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In developed countries, microbiologists do these tests with blood from wool sheep or horses.

VOA: special.2009.08.03

So according to Exodus, this Passover ritual was established on Israel's last night of slavery while the angel of death passed over the dwellings that were marked with blood.

根据《出埃及记》记载，犹太人的逾越节,诞生在犹太人最后一天做奴隶,当死亡天使越过每一户门口有血记号的房子的时候。

耶鲁公开课 - 旧约导论课程节选

Here you see the main concern is what's happening with blood sugar when people eat food.

它主要关注的问题是进食引起的血糖变化

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

They justify it by saying that feedback doesn't apply to them they aren't as likely to die before 60 as other people, for instance, because they have grandparents who lived into their 90s, or because they are avid gym goers with low blood pressure.

WSJ: Resolutions: So Irresistible, So Hard to Keep

In the case of the Mississippi baby, we know she was exposed to HIV, had HIV in her blood, and that at least some cells in her blood were found with sleeping virus though we will likely never know if those cells were from the child or maternal cells that had been transmitted during pregnancy or birth.

WSJ: Mark Siedner: About That Baby Who Was 'Cured' of HIV

Employing it in adult mice not only led to blood vessels that have lasted so far for over a year, but the blood vessels themselves are now surrounded with muscle tissue meaning that the body is able to use those vessels to properly regulate blood flow.

FORBES: Could Bypass Surgeries Become a Thing of the Past?