请你把这件事的来龙去脉说清楚。Qǐng nǐ bǎ zhè jiàn shì de láilóng qùmài shuō qīngchu.Please explain clearly the whole story of this matter.
听完他的讲述,我才明白事情的来龙去脉。Tīng wán tā de jiǎngshù, wǒ cái míngbai shìqing de láilóng qùmài.Only after hearing his account did I understand the whole story.
记者先了解了整件事的来龙去脉,然后才开始写报道。Jìzhě xiān liǎojiě le zhěng jiàn shì de láilóng qùmài, ránhòu cái kāishǐ xiě bàodào.The reporter first found out the full background of the whole matter and only then began writing the report.