Just as in grade school when you're doing division and multiplication, you do it from left to right in terms of order of operations.

正像是在小学你做除法和乘法的时候,你毫不含糊地从左到右,按顺序做运算。

哈佛公开课 - 计算机科学课程节选

Let's create a graph here that on the x axis it's going to be time, so time zero will be when you first take in a food and then one hour later, two hours later will be shown as you go from left to right, and then we'll have blood glucose level up on the y axis.

我们在这建立一个曲线图,X轴代表的是时间,所以零时间点是你第一次进食的时间,然后一小时以后,两小时以后,是从左到右呈现在图表上的,在Y轴上是你的血糖值

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选