他在赌场玩21点游戏时获得了18点。

He scored 18 points while playing ___blackjack at the casino.

警察从他的口袋里掏出了一根警棍。

The officer pulled out a ___blackjack from his pocket.

海盗们在发动袭击前，在桅杆上升起了黑旗。

The pirates raised the ___black flag on the mast before launching their attack.