许多学生没有足够的科学和数学知识背景得到进入工程学院的许可。

Many students have insufficient science and mathematics background to gain entrance to engineering school.

《柯林斯英汉双解大词典》

学生只有得到老师的许可才能离开教室。

Only if a teacher has given permission is a student allowed to leave the room.

《牛津词典》

学生们申请某学院的入学许可。

Students apply for admission to a particular college.

《柯林斯英汉双解大词典》