Mountain ranges [Photo/SIPA]
“来龙去脉”，汉语成语，本指山脉的走势和去向，现比喻一件事的前因后果（cause and effect of an event），可以翻译为“ins and outs，origin and development或whole story”等。
例句：
我不知道这件事的来龙去脉。
I don't know the ins and outs of the matter.
卢克从不告诉你事情的来龙去脉，但你总会弄明白是怎么回事。
Luke never tells you the whole story, but you always get the picture.
她需要一份关于事情来龙去脉的报告。
She wanted a blow-by-blow account of what happened.
Editor: Jade
来源：chinadaily.com.cn
