vt.

1. 即兴创作（诗歌、乐曲等）；即兴表演（或朗诵等）
   If an actor forgets his words, he has to improvise.

   演员要是忘记台词，那就只好即兴现编。

2. 临时做；临时提供；临时凑成
   He improvised a bookcase out of crates.

   他用板条箱临时做成书架。

vi.

1. 即兴创作；即兴表演（或朗诵等）
   We left the tent poles behind, so we had to improvise.

   我们忘了带帐篷支架，所以只好临时找别的东西凑合。

2. 临时做事；临时凑合

v.

1. create and perform (music, drama, or verse) spontaneously or without preparation.
2. produce or make (something) from whatever is available.