touch-and-go
['tʌtʃən'gəu]
adj. 危险的, 惊险的, 一触即发的, 无把握的
n. 飞机落地即起飞
例句与用法：
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。
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。
a.
1. 危急的, 危险的, 一触即发的; 不确定的
2. 简略的; 草率的
touch-and-go
词义辨析：
同义参见:
risky
touch-and-gotouch-and-goD.J.:[ˈtʌtʃənˈɡəu]K.K.:[ˈtʌtʃənˈɡo]adj.1.■危险的,惊险的,快速行动的
touch-and-go['tʌtʃən'ɡəu]adj.1.■一触而过的；迅速行动的；快速移动的2.■危急的；一触即发的，千钧一发的；不稳定的
touch-and-gotouch-and-go[ˈtʌtʃənˈɡəu]adj.1.■一触即离的, (从一点到另一点)快速行动的2.■危险的, 一触即发的, 动离不定的3.■草草的, 没有把握的
词性变化touch-and-go[ˈtʌtʃənˈɡəu]n.1.■快速的行动; 草率的行动2.■做事草率的人
touch-and-goadjective- (of an outcome, especially one that is desired) possible but very uncertain
（尤指期待的结果）不确定的，无把握的
it was touch-and-go whether she could reach the pram before it overturned.
还不能肯定她能否在婴儿车翻倒之前赶到。
(pl. touch-and-goes)- a manoeuvre in which an aircraft touches the ground as in landing and immediately takes off again
（飞机）着陆后又立即起飞