come into force upon signature 签字后立即生效
come into force upon ratification 批准后生效
come into force upon promulgation 自公布之日起施行
force sth upon sb 迫使某人接受某物
force the war upon him 强迫某人作战
The agreement shall enter into force upon signature.
协定签字后立即生效。
These regulations come into force upon promulgation.
本条例自公布之日起施行。
This Agreement shall come into force upon signature by the two parties.
本合同自双方签署之日起生效。
That's another way of saying maintaining velocity if it's not acted upon by a force.
这就是不受外力作用时,速度保持不变的另一种说法
And fairly soon into the conversation I demonstrated some principle that you've probably learned in your physics class having to do with an object at rest remaining at rest unless acted upon by a force.
很快,在交谈中,我就展示了一些原理,可能你们在物理课上学过,要使静止的物体保持静止,必须有外力作用。
What makes the law surprising is that if I only gave you half the law, namely every body will remain at rest if it's not acted upon by a force, you will say, "That's fine. I accept that, because here's something, you leave it there, it doesn't move.
这条定律妙就妙在,如果只看定律的前半段,即,如果物体不受外力作用,将保持静止状态,你肯定会觉得,"这没什么,我能理解,因为你把一个物体放在那里,自己肯定不会动
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