adj.不成角的，无偏差的
How is strange, his arrow is all agonic.
奇怪呀, 他的箭一点都不偏.
Geographical lines do exist where true north and magnetic north and these are called agonic lines.
当真北和磁北相吻合的时候,确实存在一些被称为无偏线的地理线.
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