play your ace
成語所屬單字ace
play your ace — 慣用語
1. To use your best argument or resource to gain an advantage.
1.慣用語
釋義
使出殺手鐧
To use your best argument or resource to gain an advantage.
例句
Diego decided to play his ace and reveal the new product.
When the talks stalled, Sara played her ace skillfully.