A memory factor is introduced to describe the characteristic that trust trail off along with time . The grey relation is used to measure the accurateness of feedback .

引入记忆因子来 刻画信任随时间 衰减的特性，并利用基于灰色相关度的方法来量化推荐信任的准确度。

And then you trail off .

于是你 逐渐 淡出 舞台。

' But he had no reason . He of all men * ' Kate 's voice trailed off .

“但是他没有任何理由。在所有人当中*”凯特的声音越来 越轻。

But do not stick around your neighborhood & check out a hiking trail or kick off your shoes and go jogging on the beach .

但是不要呆在周围的街区&找个 徒步旅行 线路，或者 脱掉鞋，去海滩慢跑。

Shorty screamed then let his voice trail off in a gale of wild laughter .

肖提尖叫着，把声音拖长，发出一阵狂笑。

The audience began to trail off when the speaker continued for over an hour .

当讲演者 讲了1个多小时 后，听众就开始 闲谈。