something intended for temporary use until something better or more suitable can be found

Hostels are used as a stopgap until the families can find permanent accommodation. 那些家庭住进永久居所之前，住旅舍通常只是权宜之计。

We might have to employ someone temporarily as a stopgap measure until we can hire someone permanently. 在找到人填补这个空缺之前，我们可能得先暂时雇个人顶一下。