| 释义 |
trace /treɪs/ ► SEE ALLtrace sth back (to sth)trace sth out●ˌtrace sth ˈback (to sth) to find the origin or cause of sth by following evidence backwards from the present time 探究事物的本源；追溯（到…）◆Many different childhood illnesses can be traced back to certain foods.
众多儿童疾病的起因都可溯源到某种食物。◆Boston has a large population that traces its roots back to Ireland.
波士顿有大量人口祖籍在爱尔兰。◆She can trace her family back as far as the 13th century.
她能把自己的家族上溯到久远的 13 世纪。OBJ roots, origins, history[v + n/pron + adv] [v + adv + n]●ˌtrace sth ˈoutto draw a shape or a mark clearly （清晰地）勾画，标出◆I traced out our route on the map.
我在地图上描出我们的路线。◆ (figurative) She traced out how working patterns had changed in the last 50 years.
她勾勒了在过去 50 年间工作模式的变迁。[v + n/pron + adv] [v + adv + n] |