Improvising
vt.& vi. 即兴创作（improvise的现在分词形式）
✅ 同义词
🗣️ 情景例句
The train is just up the street.
地铁车就在街的那一头。
The day is long to him who knows not how to use it.
百无聊赖。
What did you do at the meeting?
你们在会上做什么呢？