niú​dùn​dì​yī​yùn​dòng​dìng​lǜ

Newton's first law of motion

牛顿第一运动定律 niú​dùn​dì​yī​yùn​dòng​dìng​lǜ
Newton's first law of motion
the fundamental law of physics stating that an object at rest stays at rest and an object in motion stays in motion unless acted upon by an external force

Cross-References

Same as