flak jacket的音標是[?fl?k ??tk?]，基本翻譯是防彈夾克。速記技巧可以考慮用拼音縮寫來記：防彈夾克就是“fla k jia ke”。

Flak Jacket這個詞源自德語詞匯Flak，意為防空火炮。Jacket是英語中的一種常見后綴，表示衣服的外部部分。因此，Flak Jacket意為防空炮彈抗彈衣。

變化形式：在英語中，jacket可以作為名詞和動詞使用。作為名詞時，它可以表示夾克衫、外套等衣物；作為動詞時，它可以表示給某物加上保護層或包裝。

相關單詞：

1. bulletproof：防彈的

2. shelljacket：炮彈殼

3. armourjacket：裝甲殼

4. jacketlayer：包裝工

5. jacketed：有保護層的

6. jacketedpipe：有保護套的管道

7. jacketedwell：有保護套的井

8. jacketedwells：有保護套的井組

9. jacketedwellsinstallation：有保護套的井組安裝

10. jacketedwellsmaintenance：有保護套的井組維護

Flak Jacket常用短語：

1. put on a flak jacket 穿上防彈背心

2. take off the flak jacket 脫下防彈背心

3. wear a flak jacket 穿著防彈背心

4. flak jacket protection 防彈背心保護

5. flak jacket resistant material 防彈背心抗沖擊材料

6. flak jacket design 防彈背心設計

7. flak jacket safety 防彈背心安全

雙語例句：

1. The soldier put on his flak jacket before entering the dangerous area. (士兵在進入危險區域之前穿上防彈背心。)

2. She took off her flak jacket and handed it to her friend who was feeling unwell. (她脫下防彈背心遞給感覺不舒服的朋友。)

3. The police officer wore a flak jacket to protect himself from potential harm. (警察穿著防彈背心保護自己免受潛在傷害。)

4. The flak jacket design must be able to withstand high impact forces. (防彈背心的設計必須能夠承受高沖擊力。)

5. The safety of the flak jacket is crucial in dangerous situations. (防彈背心的安全性在危險情況下至關重要。)

英文小作文：

I always feel safe when I wear my flak jacket, because it provides me with protection in case of an emergency. Whether I am going on a job or just going for a walk, I know that my flak jacket will keep me safe from harm. It is a constant reminder of the importance of being prepared for any situation that may arise. I also appreciate the design of the jacket, which is comfortable and stylish, making it a must-have for any wardrobe. I would recommend this jacket to anyone who needs protection in their daily lives, whether it be for work or just for fun. It is a versatile piece that can be worn for various occasions and events, providing peace of mind and confidence when venturing out into the world.