trace/treɪs/

n. sth such as a mark or object which shows the existence or passing of sth

v. find or discover sth by collecting and studying information

n. [C; U] 痕迹，踪迹：[trace of sb/sth] They found traces of human activity on this island. 他们在这个岛上发现了人类活动的踪迹。

◇The plane disappeared without (a) trace. 飞机消失得无影无踪。

v. [T] 追踪，跟踪：[trace sb to sth] trace a criminal to a town 追踪罪犯到一个镇上

音组-ace/-eɪs/

race; face; place; pace; space; trace