B组 后缀 civilize v.→ n.文明 research v.→ n.研究者,调查者 commerce n.→ adj.商业的,贸易的 wealth n.→ adj.富有的,富裕的 gradual adj.→ adv.渐渐地,逐渐地 culture n.→ adj.文化的 remain v.→ n.遗物,遗迹,遗骸
civilization
researcher
commercial
wealthy
gradually
cultural
remains