Definition
这是一个四字成语，字面意思是“一句话说不完”，实际表示事情很复杂、有很多细节或难言之隐，无法简单地用一两句话解释清楚。通常用于回应别人的追问，暗示需要较长的叙述或不便细说。使用时放在句子末尾，常单独成句，例如“这事一言难尽啊。”
f.e.
it's a long story (to tell)unable to explain in a few words
Examples
- ，一言难尽。Tā hé qīzi zhījiān de shì, zhēn shì yī yán nán jìn a.The matter between him and his wife — it's really a long story.
- ？一言难尽，。Wèishénme cízhí? yī yán nán jìn, yǐhòu yǒu jīhuì zài mànmàn shuō ba.Why did you resign? It's a long story — I'll tell you slowly when there's a chance later.
- ，一言难尽。Wèn qǐ zhè duàn jīnglì, tā zǒng shì yáotóu shuō yī yán nán jìn.When asked about this experience, he always shakes his head and says it's a long story.
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