one-shot

• 1. 

  ADJ A one-shot thing is made or happens only once. 只有一次的; 一次性的 [美国英语]

  例：

  We have to have this money year after year. It's not a one-shot deal.

  年复一年我们不得不拿这笔钱，这不是一场只有一次的交易。

  例：

  This conclusion is unfounded because it depends on the results of a one-shot study.

  还没发现这个结论，因为它取决于这次一次性研究的结果。