"Salmon," notes writer Susan Ewing in The Great Alaska Nature Factbook, "pump through Alaska like blood through a heart, bringing rhythmic, circulating nourishment to land, animals and people".

作家苏珊·尤因在《伟大的阿拉斯加自然概况》中写道，“鲑鱼从阿拉斯加涌出，就如同血液从心脏流出，给土地、动物和人类带来了节奏，传递了营养。”

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Silk tubes, made by dipping a wax mold in aqueous silk solution, have a number of tissue engineering applications like blood vessel grafts and nerve guides.

丝管是通过将蜡模浸入水化的丝蛋白溶液中制成的，有许多组织工程应用，如血管移植和神经导引。

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It looks like blood but it's not.

这东西看起来像血，其实不是。

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The researchers said the hair cortisol levels were a better predictor of heart attack than established risk factors like high blood pressure.

VOA: special.2010.10.12

They use food frequency questionnaires, which I mentioned before, surveys, and then biological markers like blood tests of certain things to see how diet is related to health.

研究员还运用食物频率调查表,我之前曾提到过,各类调查以及生物标志物,像是血液检测等手段,来研究饮食与健康之间的关系

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

usually a lot of people like automatically think of like zombies and like blood,

一般人都会自然而然地想到僵尸和流血之类的，

要成为导演 - SpeakingMax英语口语达人

The dense network of blood vessels in reindeer noses is also essential for regulating the animal's internal body temperature like many mammals, reindeer don't sweat.

MSN: Scientists unravel the secret behind Rudolph's red nose