重点讲解：
1. believe or not
（强调刚才所述之事令人吃惊）信不信由你；
eg. Believe it or not, this information can transform your life.
信不信由你，认识到这一点能彻底改变你的人生。
eg. Believe it or not, he was here yesterday as large as life.
信不信由你，他昨天确确实实是在这儿。
2. What are you up to?
常用口语句型，表示“你准备干什么？”；“你在忙什么？”
eg. What are you up to this weekend?
这个周末你有什么事吗？
eg. "Dane! What are you up to? Come out of there this instant! "
“丹尼，你在干什么？马上从这里面出来！”
3. no kidding
真的，不是开玩笑；（表示感兴趣或惊讶）真的吗？；
eg. I'm scared. No kidding, really.
我很害怕。不是开玩笑，真的。
eg. 'We won.' — 'No kidding?'
“我们赢了。”——“真的吗？”
4. I have no idea
（表示强调）我不知道；
eg. 'Is she coming by coach?' — 'Well I've no idea.'
“她坐长途汽车来吗？”——“哦，我不知道。”
eg. I have no idea what you just said.
我完全不懂你刚刚说什么。
5. put together
把…放在一起；组合；
eg. They maybe data collected from several sources and were put together.
这些信息可能是从不同的来源收集来放到一起的。
eg. I can put together a few simple chords and a couple of melodies so that at least some of the tunes are recognizable.
我可以弹一些简单的和弦旋律，所以至少有些音调还是可以辨认的。