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
- 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。 - 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。 - But whether scientific cooperation can become a precursor for political collaboration is less evident.
但是科学合作是否能成为政治合作的一个先兆，这并不明显。 - Homology analysis indicated that the protein is identical to the eggshell precursor protein of F.
同源性分析表明该基因编码蛋白质可能具有肝片吸虫卵壳前体蛋白相似的性质和功能。 - 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。 - 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。 - Cyanide can serve as precursor for the amide nitrogen of asparagine.
***可以作一个天门冬酰胺的酰胺氮前体。 - 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。 - 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。 - Objective To study the effect of gypenosides on proliferation of neural precursor cells in vitro.
目的探讨不同浓度绞股蓝皂苷对体外培养的神经前体细胞增殖能力的影响。