If the time you are interested in is not zero, you're allowed to cancel it and get the time from here.

如果你们关注的解不是零时刻,那么就可以忽略它,然后从这里解出时间

耶鲁公开课 - 基础物理课程节选

I didn't even need to know that heat capacity of the product, right. Because it's effect the thermal mass of the product is negligible compared to the thermal mass of the calorimeter.

我甚至不需要知道生成物的,热容是多少，因为生成物的,热质量的作用相比于,量热计的热质量是可以忽略的。

麻省理工公开课 - 热力学与动力学课程节选

We know no one's going to choose 68 and above, so we can just forget them.

我们知道没人会选择68及以上的数,所以可以忽略它们

耶鲁公开课 - 博弈论课程节选

It's true the net force is 0, but it doesn't mean you can ignore it.

所受的合力是 0,但是并不意味着你可以忽略它

耶鲁公开课 - 基础物理课程节选

You will find that, even if you succeed in discounting the attitudes of others to you and your life, you must wrestle with yourself most of all, fight with yourself, for there will surge up in you a strong desire to alter facts, to dress up your feelings.

你会发现，即使你可以忽略,其他人对你及你的生活的态度，你还得和自己战斗，几乎是和自己抗争，这样你就会有种强烈的欲望，要扭曲事实来添油加醋地描述你的感觉。

耶鲁公开课 - 1945年后的美国小说课程节选

It means that the molecules or the atoms and the gas don't know about each other.

气体分子本身的体积,可以忽略不计。

麻省理工公开课 - 热力学与动力学课程节选

The atoms or molecules in the gas don't know that there are other atoms and molecules in the gas, and then you end up with this universal property. All right, so gases that have this universal property, even when the pressure is not zero, those are the ideal gases.

可以忽略,这样就得到了理想气体的性质,在有限压强下,依然能保持这些性质的气体，被称为理想气体，本课中我们把大部分气体，都作为理想气体来处理。

麻省理工公开课 - 热力学与动力学课程节选

We know there is no thing called a massless rope, but most ropes have a mass, but maybe negligible compared to the two blocks you are pulling, so we'll take the idealized limit where the mass of the rope is 0.

我们都知道无质量的绳子是不存在的,是绳子就有质量,但是相比于这两个物体就可以忽略不计了,所以我们有了这个理想的条件,即绳子的质量都是 0

耶鲁公开课 - 基础物理课程节选

i and j are constant, ignore them when you take derivatives.

和 j 是常矢量,求导的时候可以忽略它们

耶鲁公开课 - 基础物理课程节选