fidelities的音標為[?f?di?l?t?z] ，基本翻譯為“忠誠；信義；忠誠的行為”，速記技巧為：忠誠的行為就是履行信義。

Fidelity 的詞源是拉丁語 fidēlitā (忠誠，誠實)，由 fidēlis (忠實的) 和 -itā (行為) 構成。

Fidelity 的變化形式包括：

1. fidelity - 名詞，意為“忠誠，誠實”。

2. fidel(i)lious - 形容詞，意為“忠誠的，誠實的”。

相關單詞包括：

1. fidelity marriage - 一夫一妻制婚姻，忠誠婚姻。

2. fidelity test - 忠誠度測試，用于評估某人是否忠誠于某物或某事。

3. fidelity bond - 忠誠保證書，用于保證某人將忠誠于某物或某事。

4. fidelity insurance - 忠誠保險，一種保險，為因不忠誠行為而產生的損失提供保障。

5. fidelity report - 忠誠報告，用于評估某人是否忠誠于組織或公司。

6. fidel(i)lium - 名詞，意為“忠誠的證據”。

7. fidel(i)liousness - 名詞，意為“忠誠的程度”。

8. fidel(i)liousness test - 忠誠度測試。

9. fidel(i)liousness behavior - 忠誠行為。

10. fidel(i)liousness of loyalty - 忠誠的忠誠度。

這些單詞都與 fidelities 這個詞源有關，表示忠誠和誠實。

Fidelity短語：

1. financial fidelity - 財務忠誠

2. moral fidelity - 道德忠誠

3. loyalty fidelity - 忠誠度

4. trust fidelity - 信任忠誠

5. faithfulness fidelity - 忠誠的信念

6. reliability fidelity - 可靠性忠誠

7. truthfulness fidelity - 真實忠誠

例句：

1. He has demonstrated unwavering financial fidelity to his family and friends.

2. She has always shown moral fidelity to her principles, even in the face of pressure from others.

3. The company"s loyalty fidelity is reflected in its consistent commitment to quality and customer service.

4. I trust him with my money because of his trust fidelity.

5. His faithfulness fidelity to his job has earned him the respect of his colleagues and superiors.

6. She always delivers on her promises, demonstrating reliability fidelity in her relationships.

7. The truthfulness fidelity of his testimony was instrumental in securing a conviction.

英文小作文：

Fidelity is a fundamental value that we hold dear in our relationships with others, whether it"s financial, moral, or any other type of loyalty. It is the glue that binds us together and ensures that we are there for each other when times are tough. Fidelity is not just about promises made, but about actions taken and commitments kept. It is a testament to the strength of our relationships and a reflection of our character.

When we show faithfulness, we demonstrate our trust in the other person and their commitment to us. This creates a sense of security and stability in our relationships, which is essential for maintaining healthy and fulfilling relationships. On the other hand, lack of fidelity can erode trust and cause significant damage to our relationships, leading to feelings of betrayal and loss.

Ultimately, fidelity is about being true to ourselves and others, about standing by our commitments and being there for those we care about. It is a fundamental value that we should strive to uphold in all aspects of our lives, whether it"s in our personal or professional relationships.