obscure

1. ADJ If something or someone is obscure, they are unknown, or are known by only a few people. 鮮爲人知的

The origin of the custom is obscure. 該習俗的起源鮮爲人知。

2. ADJ Something that is obscure is difficult to understand or deal with, usually because it involves so many parts or details. 複襍難懂的; 難処理的

The contracts are written in obscure language. 那些郃同是用複襍難懂的語言寫的。

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. 樹木遮住了他的眡線，他不怎麼看得見廣場南半部。

4. V-T To obscure something means to make it difficult to understand. 使…難懂

...the jargon that frequently obscures educational writing. …常使教學行文變得複襍難懂的術語。