fifth columnist

fifth columnist的音标为["fifθ kləʊmɪst]，基本翻译为“第五专栏作家；第五方面的人”。速记技巧可以考虑使用简写或缩写，例如：可以将“fifth”简写为“5th”，“columnist”简写为“col-”，从而速记为“5th col-”。

Fifth columnist这个词源于希腊语，其词源是“πεντηκοστήν”（pentekostion），意为“第五个”。这个词最初是指古希腊的五个部落之一，后来被用来描述在战争中暗中破坏敌方阵营的间谍或叛徒。

相关单词：

1. Penthouse - 来自“pentekostion”，意为“五楼”，通常指公寓或房屋的顶层房间。

2. Penta- - 这个前缀在英语中通常表示“五”，因此Pentagon（五角形）就是一个例子，表示一个有五个角的图形。

3. Pentathlon - 意为“五项全能”，是一种体育比赛，包括五种不同的项目。

4. Pentameter - 意为“五音步”，是一种诗体，每行包含五个音步或音节。

5. Penthouse suite - 意为“顶层套房”，通常指豪华公寓或酒店的顶层豪华房间。

6. Penta-virus - 一种虚构的病毒名称，通常用于科幻小说或电影中。

7. Penta-depletion - 意为“五倍消耗”，是一种化学反应或技术，可以加速物质的消耗速度。

8. Penta-decahedron - 意为“五面体”，是一种虚构的多面体，有十个面。

9. Penta-analysis - 一种化学分析方法，用于检测物质中是否存在五种或更多种元素。

10. Penta-chromatography - 一种色谱分析方法，用于分离和检测五种或更多种物质。

Fifth columnist常用短语：

1. fifth column intrigue（第五纵队阴谋）

2. undermine sb"s confidence（削弱某人的信心）

3. divide and conquer strategy（分化与征服战略）

4. secret ally support（秘密支持）

5. betrayal of trust（背信弃义）

6. betray one"s principles（背叛原则）

7. betray one"s country（背叛祖国）

例句：

1. The fifth columnist is suspected of undermining the trust of the public.（第五纵队成员涉嫌破坏公众信心。）

2. They are trying to divide and conquer the opposition by playing on their differences.（他们试图通过利用分歧来分化并征服反对派。）

3. He secretly supported the enemy in the fifth columnist"s strategy.（他秘密支持敌人的做法符合第五纵队策略。）

4. He betrayed his principles by accepting bribes.（他因收受贿赂而背叛了他的原则。）

5. The country was betrayed by its own fifth columnists.（这个国家被自己的第五纵队成员出卖了。）

6. The enemy is trying to undermine our confidence with a series of false promises.（敌人试图通过一系列虚假的承诺来削弱我们的信心。）

7. We must guard against those who would betray our country by their actions.（我们必须警惕那些因行为而背叛祖国的人。）

英文小作文：

标题：The Dangers of Fifth Columnism

Fifth columnism refers to individuals or groups within a country who secretly support the enemy or undermine the interests of the country. This phenomenon can pose a serious threat to national security and can lead to division and discord within society.

In today"s globalized world, information and communication technologies have made it easier for fifth columnists to operate and communicate with external forces, thus making it more difficult to detect and counteract their activities. Additionally, some individuals may be influenced by external forces and be induced to participate in activities that are harmful to the country"s interests.

Therefore, it is crucial for countries to maintain a strong national security apparatus that is capable of detecting and counteracting fifth columnist activities, while also promoting patriotism and national unity among the populace to prevent such activities from taking place in the first place. In conclusion, fifth columnism is a serious threat that must be taken seriously by all nations, and must be vigorously counteracted to ensure national security and stability.