tenure

1. [U]（职位，如政治地位、土地或其他资产等的）保有holding of (e.g. political) office or land or other property,etc.
2. [U]保有期，保有状况，保有权，保有条件period or manner of this
3. [U]（大学或其他机构中教师等的）长期聘用permanent appointment as a teacher,etc. in a university or some other institution

land tenure土地占有制

tenure of office任职期

tenure track可授予终生职位的聘雇制度

life tenure终身任期；终生职

security of tenure职位/地位的稳定性；[经]使用期保障

1. It's still extremely difficult to get tenure.
   要取得终身职位仍然极其困难。
2. He has recently been refused tenure.
   他最近被拒绝授予终身职位。
3. The tenure of the US Presidency is four years.
   美国总统的任期是四年。
4. He is promised a long tenure of office.
   他得到许诺可有一个较长的任期。
5. There might be a few steps in the chain of tenure.
   在土地保有权的环节中可能存在几个步骤。