5.She was dredging up the little she knew about babies.
她努力回忆自己知关于婴儿的那点皮毛。
6.I don't understand why you had to dredge up this story.
我不明白你为什么这件旧事。
7.Methods There were 171cases suffering from t ubal obstruction accepting the operation,whose fallopian tubes were intubated and dredged under hystero scope.