It's very difficult to demote somebody who has been filling in during maternityleave.
给替代歇产假的人降职是很难的。
《柯林斯英汉双解大词典》
2
Finland provides three years of maternityleave and subsidized day care to parents, and preschool for all five-year-olds.
芬兰为父母提供3年的产假和日托补贴,并为所有5岁儿童提供学前教育。
3
Employers did create maternity-leave programs in the 1970's and 1980's, but not as a purely voluntary response in the absence of any government mandate.