We want to know how much force it exerts when I pull it by a certain amount.

我们想知道当我们将弹簧拉伸一定量时,它能产生多大的力

耶鲁公开课 - 基础物理课程节选

It is pulled by a certain amount x, and is released.

将弹簧拉长一段距离 x,并释放

耶鲁公开课 - 基础物理课程节选

At the same time, he is saying that just by picking an acorn or taking an apple or maybe killing a buffalo on a certain amount of land, that makes it yours because it's your labor and your labor would enclose that land.

同时，洛克说只要在特地土地拾得橡果或摘下苹果,或杀一头水牛，你就拥有了这块土地,因为这是你的劳动，你通过劳动圈定了这块土地。

耶鲁公开课 - 公正课程节选

This spring is getting squashed on either side, and it'll squash by certain amount x, that depends on your mass, and that x will be turned into a motion of a needle and that'll read your mass.

这个弹簧两边都会受到压缩,压缩量为 x,它由你的质量决定,x 会转换成指针的运动,你从而可以读数

耶鲁公开课 - 基础物理课程节选