然而，虚表也存在一些缺点。

However, there are some drawbacks with virtual tables.

youdao

弱引用和软引用都扩展了抽象的reference类(虚引用(phantom references)也一样，这将在以后的文章中介绍)。

Weak and soft references both extend the abstract reference class (as do phantom references, which will be discussed in a future article).

youdao

的确，脸是晒黑了，人也瘦了一圈，这十来天的军训不是玩虚的。

Yeah, her face is browned by the sun, and seems thinner than before. The ten days training is really practical.

youdao

The virtual work of the reader does not involve surprise, does not involve the violation of expectations.

读者的虚功中没有惊讶，也没有期望的违背。

耶鲁公开课 - 文学理论导论课程节选