groundn.地面；地方；根据；主题；立场；水平；背景v.使停飞；困在家中；放在地上；使 ... 搁浅；打基础动词grind的过去式和过去分词形式ground peg桩子

1. The secretory canals in the stem pith and above the leaf xylem were developed from ground meristem.
   茎髓中和叶脉木质部上方的分泌道来源于基本分生组织。