上世纪七十年代出现的麦田怪圈一开始只是简单的圆形图案，到了八十年代则演变成图形设计，而从2001年以后，麦田怪圈开始呈现复杂的二进制数。
Crop circle designs have developed from simple circles in the 1970s to pictorial designs in the late 1980s and binary number designers from 2001.
今年在这个主题上有很多麦田圈设计。
There have been many crop circle designs this year on this subject.
应用推荐