sketchy
adj (-ier, -iest) (often derog 常作贬义) lacking thoroughness and detail; incomplete; rough 概要的; 不完全的; 粗略的
Your essay gives a rather sketchy treatment of the problem. 你的文章只粗略地涉及到这个问题.
I have only a sketchy knowledge of geography. 我对地理只是一知半解.
Information about the crisis was sketchy and hard to get. 关於这次危机的消息所知甚少并且很难获得.