striation
noun [ C usually plural ] biology, geology specialized uk/straɪˈeɪ.ʃən/ us/straɪˈeɪ.ʃən/
条纹;条痕
a long, thin line, mark, or strip of colour
What has caused the striations in this rock? 这块岩石上的条纹是怎么产生的呢?
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