冰箱里的玻璃杯必须保持清洁，无污点并没有灰尘。

Refrigerator glasses should be clean, spotless and free from dust.

youdao

冰箱里的玻璃杯必须保持清洁，无污点并没有灰尘。

Refrigerator glasses should be clean, spotless and free from dust.

youdao