他在最后一杆击中了八号球，赢得了比赛。

He hit the ___eight-ball on his final shot to win the game.

警察在他的口袋里发现了几包可卡因。

The cops found several ___eight-balls in his pocket.

连续三次考试不及格后，他觉得自己真是倒霉透顶。

After failing three tests in a row, he felt like he was under the ___eight-ball.