fly-by-night

fly-by-night的音标为["flaɪ-baɪ-naɪt] ，意思是不可靠的或不稳定的。

速记技巧：可以尝试使用缩写形式，如f-by-n，这样更易于记忆。同时，也可以将单词拆分记忆，f和night各自记忆。fly可以联想为飞翔，night可以理解为夜晚，组合起来就是“在夜晚飞翔”的意思。

请注意，这只是一种记忆技巧，实际记忆效果可能因个人差异而异。

Fly-by-night这个词源于英语，它的意思是“不可靠的，不可信赖的”，源自于飞行和夜晚两个词。这个词最初是指那些在夜晚飞行，但无法保持稳定和可靠的飞行器，后来逐渐引申为“不可靠的人或事物”。

变化形式：名词fly-by-night骗子，形容词fly-by-nighting不可靠的。

相关单词：

1. Reliable - 可靠的

2. Untrustworthy - 不值得信赖的

3. Stable - 稳定的

4. Unstable - 不稳定的

5. Credible - 可信的

6. Incredible - 不可信的

7. Shadow - 影子，暗影

8. Nightmare - 噩梦

9. Illusion - 幻觉

10. Phantom - 幻影，幽灵

常用短语：

1. fly by night job

2. fly by night operation

3. fly by night person

4. fly by night scheme

5. fly by night investment

6. fly by night company

7. fly by night money

例句：

1. He is a fly by night operator who always changes his business.

2. She is always looking for a fly by night investment opportunity.

3. The company is suspected of being a fly by night company, and its employees are suspected of fraud.

4. The government should crack down on fly by night money lenders to protect the interests of the public.

5. We should be careful of investing in fly by night schemes, because they may be risky.

6. The police are investigating a suspected fly by night operation in the city.

7. She is a fly by night artist who always changes her style and medium.

英文小作文：

Title: The Mystery of the Fly-by-Night Company

One day, I received a mysterious email from a company that claimed to be a new startup but had no website or physical address. I was skeptical at first, but I decided to give them a chance because they seemed to have some good ideas and a good team. However, after a few weeks, I found out that they were not really a company at all, but just a group of fly-by-night operators who were trying to scam people out of their money. I was disappointed and angry, but I also realized that we need to be more careful when dealing with new businesses and avoid investing in fly-by-night operations that may not be legitimate.