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
- It is a precursor of many aromatic compounds and of alkaloids such as curare and morphine.
苯丙氨酸是苯化合物以及像箭毒和吗啡等生物碱的前体。 - 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。 - This study provided a precursor of N-propionyl-D-mannosamine for the tumor-associated carbohydrate antigen.
为肿瘤相关糖抗原提供了N-丙酰甘露糖胺前体。 - The effects of orthophosphoric acid concentration in precursor preparation on the catalyst behavior have been studied.
考察了前驱体制备过程中磷酸含量对催化剂性能的影响。 - 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。 - 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。 - 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。 - They alter the way it cleaves amyloid precursor protein.
它们改变了这个酶切割淀粉样蛋白前体的方式。 - 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。 - 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。