当机立断

　　Fish or cut bait

　　Take the bull by the horns.

　　To think on one's feet.

　　Quick to act.

　　eg：Take action at this critical moment should be a to fish or cut bait decision.

　　中英俚语俗语来源：文选·陈琳·答东阿王笺：“拂钟无声，应机立断。”

　　同义词：快刀斩乱麻 Cut the Gordian knot.

　　反义词：犹豫不决 To shillt-shally.