Meaning: This sentence is describing the beauty of nature. It is saying that the fields stretch for a long distance, they are covered in green grass and are very wide, and they are a part of nature and are welcoming and inviting.
Choice of Words: The words "fields stretch far" are used to describe the way fields extend for a long distance. "Green and wide" means that the fields are covered in green grass and are very wide. "Nature's embrace" indicates that the fields are a part of nature and are welcoming and inviting.