bbc每日地道英语短语：由bbc英语编写,讲解口语中最常用的英语成语短语。
今日短语
a bad hair day 头发特别糟糕的一天，无论你怎么打扮，样子就是不好看。这个短语也常被用来形容非常不顺的一天，什么事情都办不好。
例句
i've been brushing my hair for 20 minutes but it still looks awful. i guess i'm just having a bad hair day.
i'm having a real bad hair day. i woke up late, burnt my breakfast, crashed my car and lost my phone.
when i have a bad hair day, all i want to do is stay in bed and sleep.
请注意
另一个和头发有关的短语是 to tear your hair out 把头发都拔下来了。这个短语的实际含义是你被某件事情搞得非常烦恼，失去耐心了。
今日小常识
green hair doesn't naturally occur in humans... or does it? in the swedish town of anderslov people started complaining their hair was turning green. the mystery was solved by the scientist johan pettersson - who found that copper in the pipes of new houses was to blame.
绿头发是不会从人类的身上自然长出来的，这个观点对吗？在瑞典小镇 anderslov, 有些人说他们的头发开始变绿了。解开此谜团的科学家 johan pettersson 说罪魁祸首是新建房屋里所用水管里含铜量超标。