To fill up a vacancy 补充缺额
fill up a vacancy 填补空缺
fill (up) a vacancy
填补空缺
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The company had just put up a wanted advertisement, when five people came who were willing to fill the vacancy.
这家公司刚刚贴出招聘启事，就有五个人愿来填补缺员。
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