touch-and-go

形容词 touch-and-go:

1. fraught with danger
   同义词：parlous, perilous, precarious

1. The patient is out of danger now, but it was touch-and-go (ie uncertain whether he would survive) for a while.
   病人现已脱离危险，但曾有一度吉凶未卜。
2. It was touch-and-go whether we would get to the airport in time.
   我们是否能按时到机场还很难说。