flatline的音標為[?fl?tl?n] ，基本翻譯為“（心跳、血壓等）直線，停止”，速記技巧為“flat（平的）+line（線）=直線”。

Flatline的英文詞源可以追溯到拉丁語flatus，意為“被煮過的”或“被蒸煮的”。flatline這個詞在醫學領域中用來描述一個人的生命體征（如心跳、呼吸、血壓等）停止，處于極度危險的狀態。

變化形式：名詞形式為flatline，動詞形式為flatline。

相關單詞：

1. Flatness：表示平坦、平面的意思，可以引申為無生氣、無活力等含義。

2. Flatten：表示使扁平、壓平的意思，可以引申為使失去活力、使受打擊等含義。

3. Platinum：鉑金的英文單詞，來源于拉丁語platus，與flat發音相近，因此用來指代鉑金這種貴重的金屬。

4. Flatfooted：表示反應遲鈍的，與flatline的發音相近，用來形容某人反應遲鈍。

5. Flatmate：指住在同一公寓或房屋中的室友，來源于flat，因此也含有flatline的意思。

6. Flatulence：表示脹氣、放屁的意思，可以引申為無根據、夸大或不實之詞。

7. Flatulence test：脹氣測試，用來檢測食品或藥品是否會引起脹氣等不良反應。

8. Flat rate：表示統一費率或固定費率，與flatline有相似之處。

9. Flat tire：表示輪胎漏氣或爆胎，與flat發音相近，因此用來描述輪胎的狀況。

10. Flat screen：表示平板電視或平面屏幕的意思，與flatline的發音相近，因此用來描述屏幕的形狀或材質。

常用短語：

1. flatline (n.) - 指生命體征完全消失，即死亡狀態。

2. flat-line analysis - 指對某一領域或行業的發展趨勢進行平線分析。

3. flat-out - 指全力以赴，毫不保留地去做某事。

4. flat-footed - 指反應遲鈍或措手不及。

5. flat-out refusal - 指堅決拒絕。

6. flat-out denial - 指完全否認某事的存在或真實性。

7. flat-out evidence - 指確鑿的證據。

雙語例句：

1. The patient"s vital signs were flatlining, indicating that he was in a coma and may have died.

2. The company"s flat-line analysis showed that the market for its product was shrinking rapidly.

3. She flat-out refused to accept the blame for the mistake.

4. His reaction was flat-footed, and he didn"t respond quickly enough to the situation.

5. The evidence is clear and unequivocal: he is the culprit behind the crime.

6. She gave a flat-out denial that she had anything to do with the accident.

7. They were flat-out exhausted after completing the marathon.

英文小作文：

Flatlining in Life and Business

Life can sometimes feel like a flatline, with no signs of progress or growth. Similarly, in business, we see companies that seem to be stuck in a cycle of stagnation, with no clear path forward. However, just like in life, there are ways to turn things around and bring new life into a flatline situation.

For starters, it"s important to identify the root cause of the problem. Is it a lack of motivation, poor leadership, or a lack of resources? Once you know the cause, you can start to develop a plan of action to address it. This could include seeking new leadership, seeking external resources, or making changes within yourself and your team.

Another key to reviving a flatline situation is to stay resilient and maintain a positive attitude. When things are going poorly, it"s easy to get discouraged and give up hope, but staying focused and determined can help turn things around. Remember, it"s not about how many times you get knocked down, but how many times you get back up.

Finally, remember that success doesn"t happen overnight. It takes time, effort, and persistence to turn things around, but the rewards are well worth it in the end. So, if you find yourself in a flatline situation, don"t give up hope, stay resilient, and keep pushing forward. You can turn things around and bring new life into your situation.