precursor词根词缀

precursor

[priˈkɜːsə(r)]

n.前辈，前驱，先锋，前任;预兆，先兆，初期形式;[核]前驱波，初级粒子;预报器;

复数： precursors

例句:

1、

Glycerate 3-phosphate is a precursor of the amino acid serine.

甘油 3- 磷酸是丝氨酸的前体.

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2、

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.

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3、

The immediate transcript of a t RNA gene is known as precursor tRNA.

tRNA基因的直接转录物叫做tRNA前体.

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