摆乌龙
to mess something up; to screw up
白兀鹫
(bird species of China) Egyptian vulture (Neophron percnopterus)
百无一失
no danger of anything going wrong; no risk at all
百无禁忌
all taboos are off (idiom); anything goes; nothing is taboo
百无聊赖
bored to death (idiom); bored stiff; overcome with boredom
凭白无故
variant of 平白無故|平白无故[ping2 bai2 wu2 gu4]
苍白无力
pale and feeble; powerless
黑白无常
Two deities, one short, one tall, chained together at the ankle, responsible for rewarding the good and punishing the bad