替补的；临时代理的
临时填补的
Acting as a substitute; temporary replacement.
代替者；补充物；临时填补的
n someone who takes the place of another (as when things get dangerous or difficult)
The fill-in teacher helped us with our math homework.
临时代课老师帮我们做了数学作业。
用法提示：fill-in 为形容词，修饰 teacher，表示‘临时代的’。
A fill-in host welcomed the guests on the radio show.
一位临时主持人在广播节目中迎接了嘉宾。
用法提示：fill-in 作定语，说明主持人只是临时替代。
The fill-in goalkeeper made a great save in the last minute.
替补守门员在最后一分钟做出了精彩的扑救。
用法提示：fill-in 在句中作定语，修饰 goalkeeper，意为‘替补的’。
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Dictionary facts from AI_FALLBACK, ECDICT, WIKTIONARY, WORDNET.
