中文摘要：

在这评论，我们介绍著名贝尔不平等，在钟不平等之间的关系和量可分性，和量状态的纠纷蒸馏。任何纯纠缠的量状态违背钟形的不平等之一，这被显示出。而且，违背任何一这些钟形的不平等的量状态被显示可由蒸馏而得。检测更多的纠缠的混合状态的新贝尔不平等也被介绍。

英文摘要：

In this review, we introduce well-known Bell inequalities, the relations between the Bell inequality and quantum separability, and the entanglement distillation of quantum states. It is shown that any pure entangled quantum state violates one of Bell-like inequalities. Moreover, quantum states that violate any one of these Bell-like inequalities are shown to be distillable. New Bell inequalities that detect more entangled mixed states are also introduced.