a. of or relating to lines of longitude
s. running lengthwise
s. over an extended time
a. 经度的, 经线的, 纵的
[医] 纵的
1. The researchers conducted a longitudinal study to observe changes over time.
研究人员进行了纵向研究,以观察随时间变化的情况。
2. Longitudinal data helps scientists understand trends and patterns.
纵向数据帮助科学家理解趋势和模式。
3. The longitudinal analysis revealed important information about the population's health.
纵向分析揭示了关于人群健康的重要信息。