音标与读法

这里为大家介绍下precursor 是什么意思，希望能帮助到各位朋友。

音标：[ pri(:)"kə:sə ]

中英文翻译

n.

1.前辈，前驱，先锋；前任。

2.预兆；先兆。

3.预报器。

4.【原子能】前驱波；初级粒子。

something that precedes and indicates the approach of something or someone

同义词：harbinger, forerunner, predecessor, herald,

a person who goes before or announces the coming of another

同义词：forerunner,

a substance from which another substance is formed (especially by a metabolic reaction)

例句与用法

1.Crazing is the invariable precursor of brittle fracture .

出现小裂纹必然是脆性断裂的前兆。

2.These include the chlorophyll precursor protochlorophyllide a .

这些受体包括叶绿素的前体原叶绿酸a。

3.In the past this had been the precursor to strong decisions .

要是在过去，这就是要采取强力行动的预兆。

4.The immediate transcript of a trna gene is known as precursor trna .

TRNA基因的直接转录物叫做tRNA前体。

5.Cyanide can serve as precursor for the amide nitrogen of asparagine .

氰化物可以作一个天门冬酰胺的酰胺氮前体。

6.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。

7.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。

8.Most dolomite is obviously the result of replacement of precursor calcite but certainly not all .

多数白云石显然是原来方解石交代的结果，但肯定不是全部。

9.Thiophene, a highly common substance, serves as a versatile precursor to a variety of amino acids .

噻吩是一种很普通的物质，它可以作为合成各种氨基酸的母体。

10.Exogenously supplied aspartate is not an active precursor of asparagine in plant tissues .

外来供给的天门冬氨酸，在植物组织中并不是一个活跃的天门冬酰胺前体。

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