stopgap
something intended for temporary use until something better or more suitable can be found 權宜之計；臨時替代品

Hostels are used as a stopgap until the families can find permanent accommodation.
那些家庭住進永久居所之前，住旅館通常只是權宜之計。

We might have to employ someone temporarily as a stopgap measure until we can hire someone permanently.
在找到人填補這個空缺之前，我們可能得先暫時僱個人頂一下。