他们会对照价格和质量作比较。

Tāmen huì duìzhào jiàgé hé zhìliàng zuò bǐjiào.

They will compare prices and quality.

在学习过程中，我们常常对照笔记。

Zài xuéxí guòchéng zhōng, wǒmen chángcháng duìzhào bǐjì.

During the learning process, we often compare notes.

请对照清单检查所需材料。

Qǐng duìzhào qīngdān jiǎnchá suǒxū cáiliào.

Please check the required materials against the checklist.