The scientists marked a lily bud with dots along each petal's edge and "midrib" or central vein.

科学家们在百合花蕾的每片花瓣边缘和“中脉”或中央静脉上都标上了圆点。

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There is a central vein in the center of the medulla.

髓质中央有一大的静脉，称中央静脉。

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Parenteral nutrition can be given either by peripheral or central vein.

肠外营养可通过周围静脉或中心静脉给予。

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The Director of the Central Intelligence Agency, William Webster, remarked in a similar vein on the growing challenge to U.S. counter-espionage capabilities by Soviet military and KGB operations under Gorbachev.

CENTERFORSECURITYPOLICY: US-Soviet Relations

The only thing truly new to patient safety lists, but one that has been already adapted in many hospitals, is the use of ultrasound to locate precisely the vein under the collar bone used to put in central intravenous lines.

FORBES: Hospital Improvement: New Report is a Half-Baked Recipe for Patient Safety