He has given three TED talks in his time "and, you know, I've written some very well-selling books, but the effect of having those talks online has been amazing."
他在TED做过三次演讲，“我写过一些畅销书，但我还是得说这些被放到网络上的演讲效果惊人。”
2
It is selling very well, in part because the packaging is so attractive.
它卖得非常好，部分原因在于包装很吸引人。
《柯林斯英汉双解大词典》
3
By selling the helium, the government can not only pay off that debt but reduce its overall debt as well.