n.单一；单独；独身；专一
The singleness of his motives could not be questioned. 她的动机单一没有疑问。
Nevertheless, the singleness and repetition of the creative subjects impeded the development of the internet literature. 不过，创作主题的单一和重复使网络文学的发展思路变得狭窄，网络文学有自己的局限和不足。
