"Every body continues in its state of rest... Unless it is compelled to change that state by forces impressed upon it" (Isaac Newton).
“每一个物体保持其静止状态…除非有加于其上的力，它才会改变那种状态”(伊萨克·牛顿)。
If a body is kept free of the action of forces, it will remain in its state of rest or of uniform motion in a straight line.
物体如果不受外力的作用，将保持静止的状态或沿直线作匀速运动。
While we are asleep, our skin naturally enters a state of rest. Most of the cell restoration and renewal happen at this time.
在睡眠时，肌肤很自然地进入休息状态，大部分的细胞修复及更新活动都在此刻进行。
In most animals, a serious threat causes a fight-or-flight reaction, but once the danger has passed, the brain circuitry stops flaring and they return to a state of rest.
对于大多数动物而言，一个严重威胁会引发一场战斗或逃跑反应，但是一旦危险过去，大脑就会停止发出威胁信号，他们也就返回到休息状态。
Every body continues in its state of rest, or of uniform motion in a right line, unless it is compelled to change that state by forces impressed upon it.
每一个物体都保持它自身的静止的或者一直向前均匀地运动的状态，除非由外加的力迫使它改变它自身的状态为止。
Every body continues in its state of rest, or of uniform motion in a right line, unless it is compelled to change that state by forces impressed upon it.
每一个物体都保持它自身的静止的或者一直向前均匀地运动的状态，除非由外加的力迫使它改变它自身的状态为止。
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