gres.so.ri.al
adj.（形容词）Adapted for walking or having limbs adapted for walking. Used of flightless birds.适于步行的，具步行足的：适于步行的或具有适于步行的足的。用于不能飞的鸟类
来源：From New Latin gressôrius 源自 现代拉丁语 gressôrius from Latin gressus [step] [from past participle of] grado [to walk] * see ghredh- 源自 拉丁语 gressus [步] [] 源自grado的过去分词 [走，步行] *参见 ghredh-
