the root底层theart.那；这；这些；那些adv.（用于比较级前）更加；用于最高级前；(用于形容词、副词比较级前)越 ... 越 ...the athlete's structureThe cannon thundered.炮在隆隆地响。the end of Qing Dynasty清末the distance of reading阅读距离the -ties of the home对家庭的神圣义务[感情]the quality of farmland耕地质量the through arch bridge下承式拱桥The maximal family yree最大家庭树thermoplastic adhesives热塑性粘合剂the sources of the Nile尼罗河之源