flu的音標是[flu?]。基本翻譯是“流感；風行；流行病”。速記技巧是注意不要和“flood”混淆，它們之間字母“l”的位置不同。

英文詞源：拉丁語fluere（流動）

變化形式：

1. 過去式：fluo(r)t

2. 過去分詞：fluo(r)ted

3. 現在分詞：fluing

相關單詞：

1. fluency - 流暢，流利 - 詞源同fluorescent，表示發光，引申為流暢之意。

2. overflow - 溢出，泛濫 - 詞源同fluency，表示流動過多，泛濫。

3. effluent - 流出物，廢水 - 詞源同fluency，表示流動的產物。

4. fluent - 流暢的，流利的 - 詞源同fluorescent和flow，表示流動順暢。

5. fluid - 流體，液體 - 詞源同fluency和flow，表示流動的物質。

6. flux - 流量，流通量 - 詞源同flow和fluency，表示流動的數量。

7. defluce - 使離開主流 - 詞源同fluency和flow，表示使離開流動。

8. reflux - 回流，倒流 - 詞源同refly和flow，表示返回流動。

9. submerge - 淹沒，浸沒 - 詞源同sub和merge，表示下沉到流動的水中。

10. inflow - 進水，流入 - 詞源同in和flow，表示流入的水流。

常用短語：

1. influenza virus 流感病毒

2. have the flu 感冒

3. catch a cold 感冒

4. have a cough 咳嗽

5. run a fever 發高燒

6. feel under the weather 身體不適

7. have a sore throat 喉嚨痛

雙語句子：

1. I caught a bad cold this week. 這個星期我感冒了。

2. I feel terrible with the flu. 我得了流感，感覺非常糟糕。

3. I always get a sore throat when I have the flu. 我每次感冒喉嚨都會痛。

4. I"m running a temperature and feeling really unwell. 我發高燒了，感覺非常不舒服。

5. I"m feeling under the weather today, maybe I should stay at home. 今天我感覺身體不適，也許我應該待在家里。

6. I"m feeling much better now that I"ve had some rest and taken some medicine. 現在我感覺好多了，因為休息了一下并且吃了藥。

7. It"s important to stay hydrated when you have the flu to prevent dehydration. 當你感冒時保持水分很重要，以防止脫水。

英文小作文：

I woke up feeling under the weather on Monday morning. I had a sore throat and a cough that wouldn"t go away. I knew it was the flu, so I stayed home from work and rested up. By Friday, I felt much better and was able to go back to work. However, I still had to take some medicine to prevent any complications from developing. It was a lesson learned and I hope others can learn from my experience and take care of themselves when they are sick.