adj.

often improvised or impromptu

同義詞：ad hoc

for or concerned with one specific purpose

同義詞：ad hoc

1. The committee formed an ad-hoc group to address the urgent issue.
   委員會成立了一個臨時小組來解決緊急問題。
2. They organized an ad-hoc meeting to discuss the unexpected situation.
   他們組織了一次臨時會議來討論突發(fā)情況。