Crop circles are not normal occurrences, they do not fit in too well with our usual beliefs. This of course is not to everyone's liking - it is not easy to face the unknown.
麦田怪圈的出现并不寻常，它的出现给我们日常的观念带来了冲击，当然并不是所有人都会欣喜，面对未知事物绝非易事。
The tree root distribution and management study is to select tree root type which fit in with the needs of crop.
其中林木根系分布与管理研究内容是通过对林木根系类型的筛选，选择与农作物根系矛盾较小的树种；
The tree root distribution and management study is to select tree root type which fit in with the needs of crop.
其中林木根系分布与管理研究内容是通过对林木根系类型的筛选，选择与农作物根系矛盾较小的树种；
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