词根：pat = to walk

  词根pat来自拉丁语的词根pat 意为to walk。同义词根有来自拉丁语的ambul[ambl]。

同源词：

1. expatiate [向外走出去ex(=out) + pat(=walk)]
  vi.详述，细说
  She expatiated on the topic of flower arranging.她就插花这一主题进行了详细的阐述。

2. peripatetic adj.流动的；巡回工作的 peri(=around)
  peripatetic religious teachers of India 印度的周游四方宗教教师