1.to stop concentrating so that you do not understand what someone is saying
2.to stop concentrating and forget what you intended to say next
1.Now my concentration often starts to drift after two or three pages. I get fidgety, lose the thread, begin looking for something else to do.
现在，往往读过了两、三页，我的注意力就漂走了，变得烦躁不安，思绪中断，就开始找别的事情来干。
2.You lose the thread of your argument.
你们的论点有失条理。
3.you'll lose the thread of the other two information streams.
那么你就会失去其它两个信息流的线索。
4.That is to say , never lose the thread. Only in so doing can you read accurately and efficiently.
也就是说，绝不要离开这条主线.只有这样，你才能进行准确，有效的阅读。
5.Ok . . . let's not lose the thread. First of all . . . are you saying there will be a massive pole shift?
好的。。。让我们不跑题。首先。。。你们是在说将会有大规模的磁极转移么？
6.lose the thread of an argument
抓不住论据的线索。
7.to lose the thread of one's argument
论点有失条理