该段落晦涩难懂，难以解释。

The passage is ___cryptic, difficult to interpret.

他在纸条上留下了一段神秘的话语，我们都不明白其中的含义。

He left a ___cryptic note that none of us could understand.

她留下了一张神秘的纸条，没人能看懂其中的含义。

She left a ___cryptic note that no one could understand.

他在日记中使用了晦涩难懂的符号，以防别人偷看。

He wrote in his diary using ___cryptic symbols to prevent others from reading it.