Documents of Open Platform

I read some documents of from the Open Platform of WeChat this morning. The English version of the documents was so hard to read and I thought it might be  might have been translated by machine, so  I switched to the Chinese version. The mechanism offor providing the developing service through Open Platform was a little complicated. It took developers many hours to get ready for coding.

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This is a good job but you have left out some articles and prepositions.  I would also add the 'many' to the last sentence just to make it flow a little better. I changed the "might be" to "might have been" because you are speculating on an action in the past, instead of a general fact. Have a great day!