adj.粗面岩状的
The public is urgently requested to assist police in tracing this man.
紧急要求公众帮助警方追踪此人。
She is tracing laboriously now.
她正在费力地写.
She learned to draw by tracing pictures out of old storybooks.
她通过描摹旧故事书上的图画学会了画画。