take a blood sample 抽血检查
take sample of blood 取血
take blood sample
抽血
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Another factor may be the mosquito’s search for an accessible vein near the skin surface, much like that of a nurse trying multiple sites to take a blood sample.
抑或是蚊子试图通过多点测试寻找一个接近皮肤的血管，正如护士采血样时多试几个地方一样。
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