◎ 雨痕 yǔhén
[rain print] 雨點(diǎn)打在細(xì)砂、泥或粘土上形成的小淺坑,有時(shí)保留在沉積巖的層面上

1.{地質(zhì)} raindrop imprint; rain impression; rain-print; raindrop impression;