double bluff

Then he came back and could ask questions about the presents before choosing them, and here the game of bluff and double bluff came in, for one of the presents would secretly be designated 'Tommy' and once Tommy was chosen, the turn was finished.

然后那个人回到房间，他可以先提一些相关的问题，然后从这些礼物中选择一件，游戏的关键就在这里，其中一件礼物，会被秘密地设定为“机关”，如果他恰好选择了机关，这一局就结束了。

Sometimes, however, it turns into a game of double bluff.

有时候, 会变成双重的诈骗游戏.

Perhaps, he thought, it was a kind of double bluff.

他心想也许这是一招以真作假呢。

They suspected this was a double bluff on the part of Cairo Intelligence.

他们怀疑这是开罗情报人员玩的空城计。