最后那句话是全文的画龙点睛之笔。Zuìhòu nà jù huà shì quán wén de huà lóng diǎn jīng zhī bǐ.That last sentence is the finishing touch of the whole text.
房间里只加了一盆绿植,就起到了画龙点睛的作用。Fángjiān lǐ zhǐ jiā le yì pén lǜzhí, jiù qǐ dào le huà lóng diǎn jīng de zuòyòng.Adding just one potted plant to the room worked as the finishing touch.
这条红围巾给整套灰色的衣服画龙点睛。Zhè tiáo hóng wéijīn gěi zhěng tào huīsè de yīfu huà lóng diǎn jīng.This red scarf adds the finishing touch to the whole grey outfit.