precursor
英 [priˈkɜːsə(r)]
美 [priˈkɜːrsər]
n. 先驱; 先锋; 前身
复数：precursors
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.- 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。 - 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。
- Real tennis, an ancient precursor of the modern game, originated in the eleventh century...
英英释义
noun
- something that precedes and indicates the approach of something or someone
- a person who goes before or announces the coming of another
- a substance from which another substance is formed (especially by a metabolic reaction)
双语例句
- Small cell lung cancer is neuroendocrine neoplasm and origins from apud ( amine precursor uptake decarboxylation) cell.
小细胞肺癌是神经内分泌肿瘤，起源于apud（胺前体摄取脱羧化）细胞。 - Amphetamines is one kind of synthetic compounds whose precursor structure is amphetamine.
苯丙胺类物质是一大类人工合成的以苯丙胺为母体的化合物。 - 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。 - This was a necessary precursor to the development of calculus and a precise quantitative science of physics.
这是一个必要的前体的发展，微积分和精确的定量科学的物理学。 - 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。 - In plant cells the principal precursor of alanine, as well as leucine and valine, is pyruvate.
植树细胞中丙氨酸和亮氨酸、缬氨酸的主要前体是丙酮酸。 - Comparing the ratio of testosterone to epitestosterone can then indicate whether testosterone or a precursor has been taken.
因此测定睾酮与表睾酮的比例，能够反映出（运动员）是否服用了睾酮或者它的前体药物。 - 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。 - IDOL can even mediate the degradation of the receptor precursor in the endoplasmic reticulum.
甚至，IDOL能调解内质网中受体前体的降解。 - Provisions on the type, scope, measures and methods for the administration of narcotic drugs, psychotropic drugs and precursor chemicals;
三是规定了麻醉药品、精神药品和易制毒化学品管制的种类、范围、措施和办法。