给定一个英文单词，要求给出该单词的解释和使用场景。
isolation
Isolation means to be separated from others or to be alone. 

Examples:
- During the COVID-19 pandemic, many people practice isolation to prevent the spread of the virus.
- Being stranded on a deserted island can lead to prolonged isolation and loneliness.
- Some prisoners may be kept in isolation as a form of punishment or for safety reasons.