VOA慢速英语:Psychology, Stress Influence Pilots' Mental Health

psychology - n. the science or study of the mind and behavior

personality - n. the set of emotional qualities and ways of behaving that makes a person different from other people

enthusiastic - adj. feeling or showing strong excitement about something: filled with or marked by enthusiasm

depression - n. a serious medical condition in which a person feels very sad, hopeless, and unimportant and often is unable to live in a normal way

fatigue - n. the state of being very tired: extreme weariness