After all, existing jobs open up every day due to promotions, resignations, terminations（解雇）, and retirements.
出自-2012年12月閱讀原文
柯林斯高階英漢雙解學習詞典釋義
N-VAR
退休;退休年齡
Retirement is the time when a worker retires.
例句
...the proportion of the population who are over retirement age...超過退休年齡的人口比例The Governor of the prison and another official are to take early retirement.這個監獄的監獄長和另外一個官員將會提前退休。
N-UNCOUNT
退休期間;退休生活
A person's retirement is the period in their life after they have retired.
例句
...financial support for the elderly during retirement.為退休期間的老年人提供的經濟支持