Some attendees told us that they came back and sat around our booth for reasons that they could not understand 一些与会来宾告诉我们，他们也不知道为什么就自然而然地回到我们摊位附近坐下来。
And when he returned ， he found them asleep again ， （ for their eyes were heavy ， ） neither wist they what to answer him 40又来见他们睡着了，因为他们的眼睛甚是困倦。他们也不知道怎吗回答。
Mar 14 : 40 when he came back , he again found them sleeping , because their eyes were heavy . they did not know what to say to him 40又来见他们睡著了，因为他们的眼睛甚是困倦；他们也不知道怎麽回答。
" oh , yes , pa knows , i reckon , and some of the other old people ; but they don t know now what the row was about in the first place . “哦，那是的，据我看，我爸爸知道，有些老一辈人知道。不过到如今啊，一开头，最早是怎么闹起来的，连他们也不知道了。 ”
Medical experts have recognized for some time that people become infected with influenza during the winter months . but they did not really know why until recently 医学专家认识到人们是在冬季的月份里染上流感已经有一段时间了。但直到最近他们也不知道为什么。
The french had no need of authentic evidence that half of the prisonerswhom the russians were unable to look after , however much they desired to save them were dying of cold and hunger 法国人不需要知道，他们有一半的人已当了俘虏的确切消息。尽管俄国人相信他们不至于被冻死饿死，对这么多俘虏，他们也不知道该怎么办。
