a motley crew的用法和样例：
- His friends are rather a motley crew.
- They were a motley crew.
- The people she'd invited were a pretty motley crew.
- Teenage stowaway Jack Sparrow has assembled a motley crew, and theyre on the quest of a lifetime.
- The ideal blend of fun, identifiable characters and strong storyline, with a motley crew of pets and pirates, make this rumbustious piratical tale perfect for beginner readers.