During the toughest time of the pandemic, his positive attitude lifted the spirits of those around him.

positive 是形容词，意思是"积极的、乐观的"，表示对事物持肯定或建设性的看法。 attitude 是名词，意思是"态度、心态"，指一个人对人或事的看法和反应方式。 positive attitude 指"积极乐观的态度"，这种态度能带来希望和鼓舞，影响周围人的情绪。