和／或;以及／或者
used to mean that either one of two things or both of them is possible
Many pupils have extra classes in the evenings and/or at weekends. 许多学生晚上和／或周末上补习课。
They face up to eight years in prison and/or substantial fines.
Many of these patients are suffering from hepatitis and/or liver cancer.
The airline will give you a voucher for a drink and/or a meal.
I was told to contact my doctor and/or the hospital.
See also: and (ALSO)