形容词短暂的，非持久的性的，一时的; 不可信任的

1. 不可靠的,不可信任的：? get the drift明白,了解 | ? Fly-by-night不可靠的,不可信任的 | ? Nervous wreck紧张,激动

2. 夜般：fly's eye 蝇眼,复眼 | fly-by-night 夜般 | fly-over junction 立体交叉

3. 不可信任的：fly 苍蝇 | fly-by-night 不可信任的 | fly-fish 用假蝇钓鱼

4. 逃走;没有信誉的：38.altitude sickness 高原反应 | 39.Fly-by-night 逃走;没有信誉的XX | Well done 全熟

1. (商人)唯利是图的，不讲诚信的
A fly-by-night businessman is someone who wants to make money very quickly, without caring about the quality or honesty of the service they offer.

e.g. ...fly-by-night operators who fail to complete jobs.
不能完工的奸商

noun

1. a debtor who flees to avoid paying