Virtually all the students live in university halls of residence. 差不多所有的学生都住在大学的学生宿舍里。

Vaccines have virtually eliminated many childhood diseases. 疫苗实际上已消灭了很多儿童疾病。

virtually impossible/certain/unknown It’ s virtually impossible to convince him to eat vegetables. 要说服他吃蔬菜几乎是不可能的。