But, of course, we want to go all the way to distance, so we take the second derivative and we have this equation for force here.

当然我们最后想要的是距离,所以我们取二阶微,分就有这个式子。

麻省理工公开课 - 化学原理课程节选

Because what that's going to do is, it's going to force you to take practice exams.

因为在辅导班上，他们会让你做许多的模考训练。

准备LSAT的时候 - SpeakingMax英语口语达人

I can't sell myself into slavery any more than I can take somebody else's life or take someone else as a slave by force.

不能将自己变卖为奴隶,我也不能剥夺他人生命，或胁迫他人成为奴隶。

耶鲁公开课 - 公正课程节选

Therefore, what we have done now is, we can take all kinds of springs and we can calibrate the force they will exert under various conditions.

因此,我们现在能做到的就是,我们能处理各种各样的弹簧,我们能测出它们在不同的情况下,产生的力的大小

耶鲁公开课 - 基础物理课程节选

If your plan is to accelerate a 3 kg mass with an acceleration of 2 meters per second, you better have a rope that can furnish that force and it can take the tension of 6 Newtons.

如果你想用 2 米每秒平方的加速度,去拉一个 3 千克的物体,那么你就需要一根能提供拉力的绳子,并且它能够承受 6 牛的张力

耶鲁公开课 - 基础物理课程节选

You cannot say to me, "Take a force, due to a spring, and see what force it applies and divide by the acceleration and get the mass, " because we haven't defined force, either.

你不能说,"给弹簧施加一个力,看看它能提供多大的力,然后除以加速度,得到质量",因为我们还没给力下一个定义

耶鲁公开课 - 基础物理课程节选