obtuse /əbˈtjuːs/

• 1. 

  ADJ An obtuse angle is between 90° and 180°. Compare angle. (角) 钝的 [技术]

• 2. 

  ADJ Someone who is obtuse has difficulty understanding things, or makes no effort to understand them. 迟钝的

  例：

  I've been waiting for you to ask me the question yourself, and you're being obtuse and slow about it.

  我一直在等你亲自问我这个问题，而你对此一直迟钝缓慢。