陷入，指因某种原因而进入某种状态或处境，通常是指不愉快的、难以脱身的状态。

英文解释：to be trapped or involved in a situation or condition, usually an unpleasant one that is difficult to escape from.

怎么读（音标）：xiàn rù

用法：作动词，可用于主动和被动结构。常用于表示人或事物陷入某种状态或处境。

例句1-5句且中英对照：

1. He felt himself gradually being drawn into a state of depression.

他感觉自己逐渐陷入了一种沮丧的状态。

2. The country has been plunged into chaos by the civil war.

这个已经被内战推向混乱。

3. She found herself deeply immersed in the world of literature.

她自己深陷在文学的世界中。

4. The company is currently caught up in a financial crisis.

这家公司目前正陷入财务危机。

5. The hiker was trapped in the mountains due to a sudden snowstorm.

由于突然的暴风雪，这位徒步旅行者被困在山里。

同义词及用法：

1. Sink into – to gradually become involved in something

逐渐陷入某事

2. Plunge into – to suddenly and completely become involved in something

突然完全地陷入某事

3. Immerse in – to become completely involved in something

完全沉浸在某事中

4. Get caught up in – to become involved in something without intending to

无意中陷入某事

5. Be trapped in – to be unable to escape from a situation or place

无法逃离某种处境或地方

编辑总结：

陷入一词常用于描述人或事物被卷入某种状态或处境，通常是指不愉快的、难以脱身的情况。它可以用作动词，也可以用作名词，其同义词包括sink into、plunge into、immerse in等。在使用时，需要根据具体情况选择合适的同义词，并注意使用时态和语态。