an ace in the hole

常见例句

雙語例句

• The prosecutor had an ace in the hole: an eyewitness.
  檢擧人有秘密武器（神秘王牌）：目擊者。
• Tom seems awfully confident. He must have an ace in the hole.
  湯姆似乎非常有信心，他必然有一張備用的王牌。
• Your competitors do not know that you are an ace in the hole .
  你的競爭者不知道你會有這樣有用的辦法。
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原聲例句

• An ace in the hole is an argument, plan or thing kept hidden until needed.

權威例句

• Like any good gambler though, opponents of this critical resource development have an ace in the hole.
  FORBES: EPA is Obama's Offshore Drilling Ace in the Hole
• Even without nuclear weapons, North Korea has an ace in the hole.
  NPR: Despite Threats, Risks Temper Korea War Tensions
• But the reason why so many of these mortgage companies were making loans that banks couldn't make is because they had an ace in the hole, and their ace in the hole was Wall Street.
  NPR: Will Interest-Rate Cut Really Help?
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