美国禁止宗教机构支持某一候选人，不过有些教会会打擦边球。他们不明确支持某个人，却以“推荐”的方式帮这个人拉票。
- While there are laws that prohibit a church from directly supporting a particular politician, offering suggestions for how to vote is more of a gray area.
虽然法律明令禁止教会直接支持某个政客，但向教友建议如何投票却属于合法性模糊不清的做法。
这两者之间的界限很模糊，处于一种灰色地带，英语表达就是gray area。该短语的字面意义就是“灰暗、灰色地带”，引申义也就是“不明确，不清楚的状态”。
- Sports trainers at the professional, college and even high school level are becoming more involved whenever a head injury occurs. But what about when kids who play sports get hurt? That's still a gray area. It's unclear how carefully anyone is paying attention to that age group.
在职业、大学甚至高中，遇到有球员在运动中头部受伤的事情，教练都比以前更上心了。不过，如果是小孩子在运动中伤了头呢？这还不好说。目前还说不清人们对这个年龄层的受伤情况到底给予了多少注意。
头部受伤的确应该得到重视。特别是家长们，应该马上带孩子去医院检查。有句话说better safe than sorry，就是说 “宁可事先谨慎过头，也好过事后后悔”。
- When you're driving for a company, can you talk or text on your phone? Most employers never had a specific policy. That's no longer true. Because of too many accidents and lawsuits, there are now rules that everyone can understand. There's no gray area: using electronic devices is absolutely not allowed while on the job.
如果你是司机，工作开车时候能讲电话或者发短信么？以前，大部分雇主都没有确切规定。现在情况不同了。由于大量事故和官司的出现，现在有了人人都能明白的规定。再也没有什么模棱两可的了：在工作开车时绝不能使用电子设备。
不光司机开车不能打电话发短信，任何人在开车的时候都应该精力集中，不能玩儿手机。不然，一个疏忽大意，害人害己。
