Optimistic
The same 2012 Aging study that identified frequent laughter as a boost to longevity also found that optimism might tack on years to your life.
乐观
与2012《Aging》研究一致,发现频繁的笑声能促进长寿,还发现乐观可以让你多活几年 。
adj. 外向性的;性格外向的;喜社交的