concurrency的音標為[k?n?rek?ns]，基本翻譯為“同時發生，并發性”，速記技巧為“con共同+rec重復+nce動作+性”。

Concurrency這個詞的詞源可以追溯到拉丁語concursus，意為“聚集，同時發生”。它的變化形式包括名詞concurrence（同時發生的事物）和動詞concur（同時發生）。

相關單詞：

1. parallelism（平行） - 這個詞表示兩條線或路徑之間的相對位置，同時也引申出相似或同時發生的意思。

2. simultaneity（同時性） - 這個詞表示兩個或多個事件在同一時間發生。

3. concord（和諧） - 這個詞表示一致或協調，同時也含有同時發生的意思。

4. coexistence（共存） - 這個詞表示兩個或多個事物在同一環境下同時存在。

5. co-operation（合作） - 這個詞表示共同工作或行動，同時也含有同時發生的意思。

以上這些單詞都與concurrency這個詞有密切的聯系，它們都表示同時發生、相似、和諧、共存或合作等含義。同時，這些單詞也反映了人類對于同時發生、相似、和諧等概念的不斷探索和思考。

常用短語：

1. concurrency of events 事件并發

2. concurrency of tasks 任務并發

3. concurrent processing 并行處理

4. concurrent execution 并行執行

5. concurrent programming 并行編程

6. concurrent systems 并行系統

7. concurrent computing 并行計算

雙語句例：

1. While the programs are running concurrently, we need to ensure synchronization.

同時運行多個程序時，我們需要確保同步。

2. The two tasks are running concurrently, and we need to manage the resources carefully.

兩個任務同時運行，我們需要小心管理資源。

3. The computer system supports concurrent operations, which greatly improves efficiency.

計算機系統支持并發操作，大大提高了效率。

4. The concurrent execution of multiple tasks requires careful planning and coordination.

多個任務的同時執行需要仔細的計劃和協調。

5. Concurrent programming is a challenging task, which requires advanced skills and knowledge.

并行編程是一項具有挑戰性的任務，需要高級技能和知識。

6. We need to ensure that the data is properly synchronized during concurrent operations.

在并發操作中，我們需要確保數據得到適當的同步。

7. The concurrent use of multiple resources by different tasks can lead to conflicts and bottlenecks.

不同任務對多種資源的并發使用可能導致沖突和瓶頸。

英文小作文：

Parallel computing has become increasingly important in today"s world, where multiple tasks need to be completed simultaneously. Concurrency is a key concept in parallel computing, which means that multiple tasks can run simultaneously without interfering with each other. However, it also requires careful planning and coordination to ensure that the resources are properly managed and the data is properly synchronized. In this era of digitalization and automation, parallel computing has become a crucial tool for achieving greater efficiency and productivity. It can help us to tackle complex problems and accelerate the pace of innovation in various fields, such as science, engineering, and business. Therefore, it is essential to master the skills and knowledge of concurrent computing to stay ahead in this rapidly changing world.