“Barometer”一词常用于比喻衡量某种情况或趋势的指标。以下是一些常见用法及例句：
| 用法 | 例句 |
| 衡量经济状况 | The stock market is often seen as a barometer of economic health. |
| 反映社会情绪 | Public opinion polls serve as a barometer of political sentiment. |
| 指示天气变化 | The barometer reading dropped, signaling an approaching storm. |
| 衡量表现标准 | The exam results are a barometer of students understanding. |
通过这些句子可以看出，“barometer”不仅指物理仪器，也常用于抽象概念中，表示对某一现象的测量或反映。在写作中合理使用该词，能增强表达的准确性和形象性。
