| 单词 | to double down | 
| 释义 | > as lemmasto double down   intransitive. Pontoon (Blackjack).  to double down: to double the bet after one has seen the initial cards, with the requirement that one and only one additional card be drawn. Also in extended use: to engage in risky behaviour, esp. when one is already in a dangerous situation. ΚΠ 1949    J. Scarne Scarne on Cards  iii. xv. 154  				He doubles down on a count of 9 and he draws a deuce. 1956    Jrnl. Amer. Statist. Assoc. 51 438  				It is good strategy to double down on soft 12 when the dealer shows a five. 1987    B. A. Powe Ice Eaters  ii. ix. 147  				He doubled down on a pair, lost, and turned on her with searing contempt. a1991    J. Epstein Line Out for Walk 		(1991)	 233  				Let me double down..and see if I can't win some points for being a racist by asserting that, for some while now, black men have worn hats with more flair than anyone else in America. 2001    N.Y. Times Mag. 10 June 77/3  				Far from admitting defeat, Middelhoff is effectively doubling down. In February, he managed to persuade Mohn..to agree to sell a quarter of the company to the public. < as lemmas  | 
	
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