◆to be chalk and cheese or to be like chalk and cheese or to be as different as chalk and cheese or to be as alike as chalk and cheese<英,非正式>完全不同；截然不同
Schumacher and his Colombian team-mate are chalk and cheese.舒马赫和他的哥伦比亚队友完全不是一个类型的。
The two places, he insists, are as different as chalk and cheese.他坚称这两个地方有天壤之别。