2011年1-12月是项目实施的关键阶段。的翻译：2011-December is the critical stage of project implementation. 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

January to December 2011 is a crucial stage of project implementation.

2011-December is the critical stage of project implementation.

In 2011 1- December is the project implementation critical phase.

1 December 2011 - Implementation of the project is a critical phase.

2011-December is the critical stage of project implementation.