precursors

英 [pri(ː)ˈkɜːsəz]

美 [priˈkɜrsərz]

n. 先驱; 先锋; 前身
precursor的复数

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。

双语例句

Research progress on preparation methods for precursors of lithium ion-sieve
锂离子筛前驱体制备方法的研究进展
For precursors, confidence would come from empirical observations; understanding mechanisms would be desirable but not necessary.
对前兆来讲，信心来自经验主义的观察；理解机制是期求的，但并非必要。
They can be used in researches of seismic precursors, and have made many contributions to exploration of subsurface structure.
在地震前兆的探讨方面占有一席之地；在探测地下构造中有许多贡献。
It indicated that the geomagnetic anomaly is a promising phenomenon in the studies of earthquake precursors.
说明地磁异常变化是一种有希望的地震前兆现象。
The study on variation regularity of geomagnetic field is fundamental to pick up seismic and geomagnetic precursors.
对地磁场变化规律性的研究是提取地震地磁前兆的基础。
In many ways, they were the precursors to modern mash-ups& sort of like local mash-ups.
在许多方面，它们是现代mash-up的前身&有点像本地mash-up。
Cobalt salt was employed as catalyst precursors, copper plate as substrate and ethanol as carbon source.
采用乙醇催化燃烧法，以钴盐作为催化剂先体、薄铜片作为基底制备碳纳米管。
For our evolutionary precursors out in the wild, the fight-or-flight response was a valuable survival mechanism.
对于那些处于野外进化中的祖先来说，逃跑或战斗响应是一个宝贵的生存机制。
Various preparation methods of lithium-manganese oxide and lithium-titanium oxide which act as precursors of lithium ion-sieves were introduced, respectively.
详细介绍了作为锂离子筛前驱体的锂锰氧化物和锂钛氧化物的制备方法，包括固相烧结法和液相反应法等。
Most of the metabolites were flavoring compounds and flavoring precursors for food, and also an integral part of aroma-producing& flavoring-producing substances in Maotai liquor.
这些物质中有多种是食品中的风味物质和风味前体物质，亦是茅台酒众多呈香呈味物质中的组成部分。