Technology is the key to unlocking more efficient and cleaner energy solutions.

变得快乐的技巧几乎完全不同于不悲伤的技巧。

I believe that the testing of the student's achievements in order to see if he meets some criterion held by the teacher, is directly contrary to the implications of therapy for significant learning.

过去是一个异国他乡；他们做事的方式不同。