词汇	探洞
释义	探洞 exploratory heading
随便看	primary storage medium primary store primary story level primary strainer primary strand primary stratification primary stratigraphic trap primary strength primary stress primary-stress primary stress bearing area primary stress-bearing area primary stresses primary stress field primary stress, initial stress primary stretching primary stricture primary string processing primary string processing operation primary stripe primary structural primary structural component primary structural elements primary structural plane primary structure