重点讲解：
1.at least 至少
例句：Most people believe that the strike will last for at least a week.
多数人相信，罢工至少会延续一个星期。

2.it's kind of like 这有点像
例句："It's kind of like the European blues, " said a man at the festival.
“有点像欧洲蓝调”一名在活动现场的男子说。

3.rare to do 很少...
例句：It's rare to feel refreshed when you're done or to be inspired to great thought.
当做完这些事情的时候，你很少会感受到精神振奋，或者得到启发产生绝妙的想法。

4.keep you on your toes 小心；警惕
例句：Nobody likes uncertainty, but it does keep you on your toes.
没有人喜欢不确定的事，但它的确会使你保持警觉。