Soil should also be tested for its pH level, a measure of the acid and alkaline balance.

VOA: special.2009.06.09

Now if you've gone to the doctor, often they'll measure your triaglyceride level as a measure of how healthy your liver is and how healthy your diet is.

现在如果你去看医生,他们通常会测你的甘油三酯水平,以此作为你的肝健康和饮食健康的指标

耶鲁公开课 - 生物医学工程探索课程节选

What if you could take just a pump that's capable of continuously administering insulin at various rates and connect it to a sensor that's able to continuously measure the sugar level in your blood?

如果我们安装一个泵,能够持续的动态控制胰岛素输出,并把这个泵连接到一个,持续监测体内血糖水平的变化的传感器上

耶鲁公开课 - 生物医学工程探索课程节选