前期的的英文：
antecedent

Entrepreneurship before, during and after dot-com
网络公司的前期、中期与后期创业

13 Hole volumes includes previous casing volume.
(泥浆设计中的)井眼体积包括前期套管的体积。

The stage in prophase of meiosis during which homologous chromosomes become paired.
偶线期减数分裂的前期阶段，在此期间异体同型的染色体配对

During the early period of their tenure of office, that generation of leaders was good.
这一代的前期是好的

Organize technical communication with both supplier in prophase
组织供应商前期开发的技术沟通

With good preparations, he got his graduation thesis done at one go.
由于前期准备充分,他的毕业论文一气呵成。

Much advance publicity was given to the talks.
对于这次会谈有很多前期报道。

At the onset of mitosis, prophase, the nucleolus breaks down
有丝分裂的开始称为前期，核仁消失。

Recently published figures show a divergence from previous trends.
最近公布的数字表明，目前情况与前期趋势相背离。

Molecular clouds play an integral role in the prestellar evolutionary sequence of interstellar matter
分子云在星际物质的星前期演化序列中起着不可缺少的作用。

antecedent debt
先前的债项

This is an antecedent of the war.
这是战争的前因。

Creative thinking is the antecedence of design.
创新性设计，必须有创新性思维。

It hides in the prototypic scenario of the antecedent.
它隐藏于先行词的典型场景之中。

This is called the antecedent of a conditional statement.
这被称为条件句前提。