A reliable supply of safe blood is essential for scaling up health at several levels, particularly for women and children.

安全血液的可靠供应对于加强若干层次的卫生服务、尤其对于妇女和儿童极其重要。

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The color becomes a pale pink, which reflects a lack of blood supply.

由于血液供给不足，它的颜色会变得苍白。

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This would include cases where heart tissue becomes damaged after being deprived temporarily of oxygen due to a blockage in the blood supply.

包括由于血液堵塞引起短暂缺氧而受损的心脏组织。

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Patients undergoing long-term elective surgeries are advised to donate their own blood, a practice Dr.Mwanda says accounts for a significant percentage of the hospital's surgery blood supply.

VOA: standard.2010.06.04

Such skin absorption occurs in other mammals, and the leathery look of elephant skin is deceptive it actually has a rich blood supply.

ECONOMIST: Elementary elephant control