He said they have not verified it , but have had several calls by women saying that they heard baby cries outside their doors 这位女士表示那声音听起来象是婴儿爬到窗户附近哭，她担心婴儿会爬到街上，被车子碾过。
It sounds like something straight out of a futuristic film : house hunters , driving past a for - sale sign , stop and point their cellphone at the sign 听起来象直接取材于未来电影：寻房人，驾车经过”出售中“的牌子，停车把手机指向标牌。
However , if the system will accept a similar voice that sounds " sick , " then it s more likely to fall prey to attackers who can reasonably mimic the voice of valid users of the system 但是，如果系统能接受一个听起来象“病人”一样类似的声音，则会给那些适当模仿系统有效用户的声音的攻击者钻空子。
