比较级： more successful
最高级： most successful

How will you know when you 're successful ?

你如何知道你什么时候成功的？

With this meeting they celebrated successful river damming .

这次大会庆祝了大坝的顺利填筑。

Successful places have in common the ability to attract people and to enable them to collaborate .

胜利的城市有个共同点，即能够吸引人们入住并促使人们互相合作。

To make successful movies more expensive , you have to know what movies are going to be successful .

想拍高成本的卖座电影，你得心里有数什么样的电影会卖座。

Since you two have once had a successful sexual relationship , it should be possible to return to that .

你们两人曾经也有过一段美满的性爱生活，所以有可能回到以前的状态。