| 单词 | fly-by-night |
| 释义 | fly-by-night informal adjective 1. unreliable or untrustworthy, esp in finance 2. brief; impermanent noun also: fly-by-nighter 3. an untrustworthy person, esp one who departs secretly or by night to avoid paying debts 4. a person who goes out at night to places of entertainment |
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