单词	bloodstream
释义	bloodstream /ˈblʌdstriːm / noun [in singular] The blood circulating through the body of a person or animal.It can also travel to other parts of the body through the bloodstream and lymph system.... Red blood cells are produced in the bone marrow and circulate in the bloodstream before they are broken down in the spleen. From here, the oxygen in the air can be absorbed into the bloodstream and taken to the rest of the body.
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