setbacks是什么意思？

Students' belief about the cause of their failure explains their attitude toward setbacks.

I first began to investigate the basis of human motivation—and how people persevere after setbacks—as a psychology graduate student at Yale University in the 1960s.

I first began to investigate the basis of human motivation— and how people persevere after setbacks—as a psychology graduate student at Yale University in the 1960s.

Shoddy(粗糙的) reproductions of her work along with setbacks to women's roles in 18th-and 19th-century Europe resulted in her efforts being largely forgotten.