R tm语料库输出若干结构虚词

使用TM库，语料库包括来自矢量源结构的单词：

text <- readLines("some.txt")

finalCorpus <- Corpus(VectorSource(newCorpus))
finalCorpus <- tm_map(finalCorpus, stripWhitespace)
save(finalCorpus, file="data/DEBUG.Rda")# DEBUG
df<- data.frame(lapply(finalCorpus, as.character), stringsAsFactors=FALSE)
df
>protracted periods meditation fasting prayer ennui fever energy vigor
>married joseph lee dollars million canadian dollars gbp pastored african
>american church snow hill jersey children died infancy **meta list author
>character datetimestamp list sec min hour mday mon year wday yday isdst
>description character heading character id language en origin character
>X2   X3
>1 list list**

文本字符日期时间戳列表秒最小小时mday周一年wday yday isdst
>描述字符标题字符id语言源字符
>X2×3
>1名单**

**之间的单词来自语料库，而不是导入的文本，为什么我会得到它们？如何删除它们（没有removeWords TM函数）