[əb'struːs]

adj. 深奥的；难懂的

用法：abstruse是一个形容词，意为深奥的，难懂的。它通常用来形容某些概念、理论或者语言，表示它们非常难以理解或者掌握。

例句1：His speech was full of abstruse concepts that even the experts had a hard time understanding.

他的演讲充满了深奥的概念，连专家们都很难理解。

例句2：The book is written in such an abstruse language that I have to read it several times to fully understand it.

这本书用非常深奥的语言写成，我不得不读几遍才能完全理解它。

例句3：The professor's lectures were always abstruse, but his students were used to it and found them fascinating.

教授的讲座总是很深奥，但他的学生们已经习惯了，并且觉得很有趣。

例句4：The subject matter of this research paper is quite abstruse, so I suggest you do some background reading before diving into it.

这篇研究论文的主题非常深奥，所以我建议你在开始阅读之前先做一些背景阅读。

例句5：The author's writing style is often criticized for being too abstruse and inaccessible to the general public.

这位作者的写作风格经常被指责过于深奥，普通大众无法理解。

同义词及用法：

1. obscure (adj.)：含义与abstruse相近，都表示难以理解的。但obscure更多指某些知识或概念在表达上比较晦涩或者隐晦。

例句：The professor's explanation was so obscure that the students had a hard time following it.

教授的解释非常晦涩，学生们很难跟上。

2. esoteric (adj.)：含义与abstruse相似，都表示深奥的。但esoteric更强调某些知识或者理论只有少数人能够理解。

例句：The book is filled with esoteric theories that only a few experts can fully comprehend.

这本书充斥着只有少数专家能够完全理解的深奥理论。

3. recondite (adj.)：含义与abstruse类似，也表示深奥的。但recondite更强调某些知识或者理论非常复杂和晦涩。

例句：The subject matter of this research paper is quite recondite, so it may be difficult for non-experts to understand.

这篇研究论文的主题非常复杂，所以对于非专家来说可能很难理解。

编辑总结：

abstruse是一个形容词，意为深奥的，难懂的。它通常用来形容某些概念、理论或者语言，表示它们非常难以理解或者掌握。与其相近的词语有obscure、esoteric和recondite。在写作时，我们可以使用abstruse来描述某些复杂、晦涩的知识或者理论，但要注意避免过度使用，以免造成读者的困惑。