美国工会发展历史绵长，对应的工会立法也逐步完善的翻译：United States trade unions long development history, the corresponding Trade Union legislation is gradually improving 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

The lingering history of the development of trade unions, the corresponding trade union legislation also gradually improve

United States trade unions long development history, the corresponding Trade Union legislation is gradually improving

The American Trade union development history is prolonged, the corresponding trade union legislation also gradually consummates

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United States trade unions long development history, the corresponding Trade Union legislation is gradually improving