Positive psychology is not just about feeling good, it's about the good life - a life with engagement, meaning, and positive relationships.
对红海的关注假设行业的结构条件是既定的,企业被迫在其中竞争。
在独裁统治下,时间停滞不前。
根据问题出现的背景,代数实部可以接受从负无穷到正无穷的所有数值。
幸福通过美德获得;它是人通过自己的意志获得的美好。
Investing in lower-emission technologies is not only good for the planet but also makes sound business sense.