This team lacks training — they are simply a motley crew.
Tips
history
This idiom originates from the 後漢書 (Hou Han Shu, Book of the Later Han), where it described an undisciplined army as resembling crows randomly flocking together. Crows (乌) are known for gathering chaotically, making them a symbol of disorder.
memory
Picture a flock of crows (乌) suddenly flocking (合) together — no order, just chaos. That is the crowd (众) described by this idiom.