It was touch-and-go whether we'd arrive before we ran out of petrol.我们能不能在汽油用完之前赶到很难说。It had been touch-and-go for him in the hospital, but he had eventually recovered.他在医院病情曾很危急,但最终康复了。It's touch-and-go with him.他的情况十分危急。It was touch-and-go whether the doctor would get there on time.医生是否能按时赶到很难说。