Fly-by-night
01
不可靠的人, 昙花一现的公司
an unreliable person or company that is only interested in making money and is likely to avoid paying its debts back
例子
The contractor turned out to be a fly-by-night, disappearing after receiving the advance payment.
承包商原来是个骗子，收到预付款后就消失了。
Many investors lost their money by trusting a fly-by-night who promised unrealistic returns.
许多投资者因为信任一个承诺不切实际回报的骗子而失去了他们的钱。
fly-by-night
01
短暂的, 昙花一现的
ephemeral
02
不可靠的, 不靠谱的
(of businesses and businessmen) untrustworthy or undependable
