She gathered loose soil and let it filter slowly through her fingers.她捧起疏松的泥土，任其缓缓地从指间漏下。Ocean Optics cuvette holders can accommodate both single - filter and double - filter slide carriers.我们的试管支架对单滤光片幻灯机和双滤光片幻灯机都适合.PA ...
She gathered loose soil and let it filter slowly through her fingers.她捧起疏松的泥土，任其缓缓地从指间漏下。Change the filter cartridge as often as instructed by the manufacturer.按照生产厂家的使用说明，经常更换过滤筒。This congealed muck was interfering with...