Unverified90% confidenceFactTime unknown
RunnablePassThrough将用户的原始输入原封不动地传递到下一步，不做任何修改
1
Sources
90%
Confidence
Long-term
Relevance
5/31/2026
First Seen
Sources
LangChain LCEL表达式语言详解：管道操作符、RunnableLambda与并行执行实战
youtubeJames Briggs
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