This is an open question at the moment.
此刻这还是个悬而未决的
。
This is an open question at the moment.
此刻这还是个悬而未决的。
The desynchronization attack is very difficult to tackle and still an open question.
同步攻击很难对付，依然是一个悬而未决的课。
声明：以上例句、词性分类均由互联网资源自动
，
分未经过人工审核，其表达内容亦不代表本软件的观点；若发现
，欢迎向我们指正。
