casual vacancy meaning in English

空置单位
临时空缺

Term of office of the chief executive elected to fill a casual vacancy
获选填补中途出缺的行政长官职位的人的任期
Almost all of them are casual vacancies and are usually filled up shortly afterwards
这些空位几乎全属短期空位，在出现后短时间内会被尽用。
Any casual vacancy occurring in the executive committee may be filled up by the executive committee
理事会内部的任何临时空缺将由理事会设法补缺。
If any casual vacancy occurs in the office of auditors , the directors may fill up the same , but while any such vacancy continues the surviving or continuing auditor or auditors , if any , may act
若审计员临时空缺，董事会可填补空位，若审计员职位一直空缺，由在职审计员进行核算。