"Inutile loveliness" is kind of the keyword of Nabokov's technique, and he says that the novel has its only purpose to provide aesthetic bliss.

“无用的可爱”是纳巴科夫技巧的一个关键词，他说小说只有一个目的，那就是提供美学狂喜。

Theperformance screening inutile ray fills the requirement of corresponding nation criteria.

装置对漏射线的屏蔽符合国家相应标准的要求。