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.