According to the law of inertia, a body once in motion will never stop till a force compels it, nor will a body at rest start to move of its own accord.是什么意思_According to the law of inertia, a body once in motion will never stop till a force compels it, nor will a body at rest start to move of its own accord.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句