finishing touch
锦上添花
口语·写作·表示最后完善细节
英文释义
the final detail or action that completes or perfects something
例句
I added a pinch of cinnamon as the finishing touch to the apple pie, and it tasted perfect.
典故来源
源自绘画或雕塑艺术，最后几笔或细节能令作品完整且出色，比喻最终完善步骤。