obscure

柯林斯词典

1. ADJ If something or someone is obscure, they are unknown, or are known by only a few people. 鲜为人知的
The origin of the custom is obscure. 该习俗的起源鲜为人知。
2. ADJ Something that is obscure is difficult to understand or deal with, usually because it involves so many parts or details. 复杂难懂的; 难处理的
The contracts are written in obscure language. 那些合同是用复杂难懂的语言写的。
3. V-T If one thing obscures another, it prevents it from being seen or heard properly. 遮掩
Trees obscured his vision; he couldn't see much of the square's southern half. 树木遮住了他的视线，他不怎么看得见广场南半部。
4. V-T To obscure something means to make it difficult to understand. 使…难懂
...the jargon that frequently obscures educational writing. …常使教学行文变得复杂难懂的术语。