我用tm包中自带的data做了个实验：
data("acq")
执行acq[[10]] 显示：
“Gulf Applied Technologies Inc said it
sold its subsidiaries engaged in pipeline and terminal
operations for 12.2 mln dlrs.
The company said the sale is subject to certain post
closing adjustments, which it did not explain.
Reuter”
用了stemDocument词干化命令：stemDocumnet(acq[[10]])显示：
“Gulf Applied Technologies Inc said it
sold its subsidiaries engaged in pipeline and terminal
operations for 12.2 mln dlrs.
The company said the sale is subject to certain post
closing adjustments, which it did not explain.
Reuter”
完全没有词干化，请问各位有没有碰到同样的问题，谢谢。
