in uniform motion in a straight line unless compelled to change
除非被迫改变，否则作匀速直线运动
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Every body continues in its state of rest, or in uniform motion in a straight line unless it is compelled to change that state by forces impressed upon it.
物体都保持静止的或沿一条直线作匀速运动的状态，速运动的状态，除非作用在它上面的力迫使它改变这种状态。使它改变这种状态。
youdao
应用推荐
模块上移
模块下移
不移动