Positive psychology is as concerned with strength as with weakness, as interested in building the best things in life as in repairing the worst.
积极心理学既关注弱点也关注优势，既对修复最坏的事情感兴趣，也对建立生活中最好的事情感兴趣。
Natural gas is a versatile fuel that can support renewable energy growth by providing reliability when the sun isn't shining and the wind isn't blowing.
In mathematics, you don't understand things. You just get used to them.