You always want to check your signs at the and because it's so easy to get the sign wrong, and I was hoping that it was right here because I wasn't sure, but it turned out to be right.

我们完成计算时，一定要记得检查符号,因为很容易弄错符号，刚才我就不太确定,是否弄错了符号，检查发现没有问题。

麻省理工公开课 - 热力学与动力学课程节选

Just check, that exactly corresponds to the easy and hard thing we just had before.

验证一下,这和我们之前,选择平坦之途还是崎岖之途是对应的

耶鲁公开课 - 博弈论课程节选