signs barring cell-phone use are a familiar sight to anyone who has ever sat in a hospital waiting room.
2016年6月四级真题（第二套）阅读 Section A
英语六级真题
Too many workplace policies effectively prohibit employees from developing a healthy work-life balance by barring them from taking time off, even when they need it most.
2016年12月六级真题（第一套）阅读 Section B
柯林斯高阶英汉双解学习词典释义
PREP
不包括；除…以外
You use barring to indicate that the person, thing, or event that you are mentioning is an exception to your statement.