Caffeine consumption correlates with education levels. Amphetamine use tracks levels of crime.

咖啡因摄入与教育程度相关。安非他命的使用能追踪犯罪程度。

And with no raised platforms, passengers boarded the train at track level.

由于站台没有升高，乘客在铁轨上登上火车。

It will track their pollution levels and label cities green for cleaner air and red for dirtier air.

会对这些城市的污染水平进行跟踪监测，洁净空气的城市会被标记为绿色，而污染严重的城市则标为红色。

Some used mail-in samples of body fluids or continuous monitoring devices to track blood levels of glucose, lipids, vitamins and so on.

一些人使用邮寄的体液样本或连续监测设备来追踪血糖、血脂、维生素等的血液水平。

You just have to search for " COVID-19 diagnostic tests." Lewis: One other thing I've been very interested in, as the emergency ends, is how we're going to track COVID levels.

您只需搜索“COVID-19 诊断测试”。刘易斯：随着紧急情况的结束，我一直非常感兴趣的另一件事是我们将如何跟踪 COVID 水平。