precursor

英 [priˈkɜːsə(r)]

美 [priˈkɜːrsər]

n.  先驱; 先锋; 前身

复数：precursors　

TOEFLGRE化学

Collins.1 / BNC.10361 / COCA.9664

牛津词典

noun

• 先驱；先锋；前身
  a person or thing that comes before sb/sth similar and that leads to or influences its development

柯林斯词典

• N-COUNT 先驱；先锋；前身
  Aprecursorof something is a similar thing that happened or existed before it, often something which led to the existence or development of that thing.
  1. Real tennis, an ancient precursor of the modern game, originated in the eleventh century...
     室内网球，现代网球运动的古老前身，起源于11世纪。
  2. He said that the deal should not be seen as a precursor to a merger.
     他说该笔交易不应该被看作是合并的前兆。

英英释义

noun

• something that precedes and indicates the approach of something or someone
  Synonym:harbingerforerunnerpredecessorherald
• a person who goes before or announces the coming of another
  Synonym:forerunner
• a substance from which another substance is formed (especially by a metabolic reaction)

双语例句

• In this way, it's sort of a precursor to Apple's new GarageBand application.
  这样，它成为苹果公司的新GarageBand应用程序的先驱。
• Hobbes is a precursor of modern positivism and analytical jurisprudence.
  霍布斯是现代实证主义法学和分析法学的先驱。
• This is because the active drug ingredient is not dopamine itself but various precursor molecules.
  这是因为活性治疗药物成分不是多巴胺本身，而是一些前体药物。
• The sol-gel coating was prepared with cellulosic fabrics and synthetic fabrics as carriers and TEOS as precursor.
  以纤维素织物和合成纤维织物为载体，以硅酸乙酯（TEOS）为水解前驱体，对织物载体进行溶胶凝胶涂层整理。
• Based on studies of precursor events and unusual animal behavior, a warning was issued by local authorities.
  当地政府根据震前先兆与动物的反常行为，发出了地震预警。
• Calcium deposits in the coronary arteries are considered a precursor of future heart disease.
  冠状动脉中的钙沉积是导致人们将来患上心脏病的先兆症状。
• Is the precursor of DHA to promote brain development and enhance memory.
  的前体，促进脑力发育和增强记忆力。
• They then examined their arteries for arterial stiffness, often a precursor to high blood pressure and heart disease.
  然后研究者检查了被测试着的动脉硬化情况。动脉硬化是高血压和心脏疾病的前兆。
• An amino acid found in most proteins; a precursor of several hormones.
  多数蛋白质中的氨基酸，是许多激素的前体。
• Papain-catalyzed synthesis of aspartame precursor z-apm in biphasic solvent system wasinvestigated.
  本文报道在两相溶剂体系中利用木瓜蛋白酶催化合成aspartame前体z－apm的研究。