defenseless

defenseless的音标为[dɪˈfensləs]，基本翻译为“无防御的；无抵抗力的”。在发音上，/dɪ/是爆破音，需要适当用力发音，/fens/是摩擦音，发音时需要清晰且缓慢，/l/是唇齿爆破音，发音时要注意嘴唇不要咬紧。在记忆单词时，可以尝试使用词根记忆法，defenseless意为无防御的，其中defense即为防御的意思。同时，也可以结合单词的含义和拼写来记忆，例如无防御的、无抵抗力的，可以将其拆分为“无防御”和“less”，从而记住其拼写和含义。

"Defenseless"这个词的词源可以追溯到拉丁语"defensus"，意为“防御”。它通过词缀"dis-"和"fensus"结合，形成了"defenseless"这个单词，表示“没有防御的”。

变化形式：在词形上，"defenseless"是其基本形式，表示“无防御的”。

相关单词：

1. "Defend"：意为“防御”，词源也是"defensus"，表示保护某物或某人不受攻击。

2. "Defense"：意为“防御系统”，是由"defensum"和"ion"构成的名词形式，表示防御措施或手段。

3. "Defensive"：意为“防御性的”，是由形容词词性转化而来，表示具有防御特点或行为的。

4. "Indefensible"：意为“无法辩护的”，是由"in-/im-/dis-"等否定前缀和"defens-/defense-"构成的，表示无法证明或辩护的。

5. "Defeat"：意为“击败”，是由"defe-（击败）"+"eat（吃）"构成的，与防御有关，表示通过击败对手取得胜利。

6. "Defender"：意为“防御者”，是由"defend"的名词形式构成的，表示进行防御的人或物。

7. "Defensive_tactics"：意为“防御策略”，是由名词词性转化而来，表示用于防御的策略或方法。

8. "Defensive_attitude"：意为“防御态度”，是由形容词词性转化而来，表示一种对攻击或威胁的防备态度。

9. "Defensive_posture"：意为“防御姿势”，是由名词词性转化而来，表示一种防御性的身体姿势或态度。

10. "Defensive_system"：意为“防御系统”，是由名词词性转化而来，表示一套用于防御的机制或系统。

常用短语：

1. defenseless against

2. defenseless against the enemy

3. defenseless against attack

4. defenseless against attackers

5. defenseless against the elements

6. defenseless against the weather

7. defenseless against natural disasters

例句：

1. The old man was defenseless against the cold winter wind.

2. The city was defenseless against the enemy"s attack.

3. The young girl was defenseless against the bullies at school.

4. The house was defenseless against vandals.

5. The ship was defenseless against the stormy waves.

6. The animals were defenseless against the hunters" guns.

7. The environment is defenseless against pollution and destruction.

英文小作文：

标题：The Importance of Defense

In today"s world, we are constantly reminded of the importance of defense, whether it be for our country, our city, or even our own homes and families. However, it is not only physical defense that is crucial, but also psychological defense. We must be aware of our weaknesses and be willing to protect ourselves from them, whether it be through self-esteem, self-confidence, or simply being aware of our surroundings and potential threats.

Without proper defense, we are vulnerable to attack from others or from within ourselves. We may feel powerless and defeated, unable to cope with the challenges that life throws at us. However, with proper defense in place, we can face any challenge with confidence and strength, knowing that we have the tools and resources to overcome it.

Therefore, it is essential to always be aware of our defenses and to constantly improve them if necessary. Only then can we truly be safe and secure in this ever-changing world.