The jacket is made of some low-grade material.这件夹克是用某种劣等料子做的。He couldn't tell the difference between plonk and a decent bottle of wine.他分不出劣等葡萄酒和上等葡萄酒有什么差别。They need all the novelty they can find to pep up an inferior product.他们要利用可以发现的一切新奇点子来提升劣等产品的吸引力。