extempore
adj, adv (spoken or done) without previous thought or preparation; impromptu 无准备的; 即席的
an extempore speech 即席讲话
speak extempore, ie without notes 即席发言.
🗣️ 情景例句
The match was postponed to the following Saturday because of bad weather.
比赛因天气不好而延期到下个星期六进行。
The gas stove is out of order.
这煤气灶坏了。
Refuse politely any cold drink from an unknown source.