先合成一个大分子前胰岛素原的翻译：Before the first synthesis of a macromolecule proinsulin 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Before the first synthesis of a molecule proinsulin

Before the first synthesis of a macromolecule proinsulin

Synthesizes in front of first a macro-molecule the insulin original

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Before the first synthesis of a macromolecule proinsulin