例句與造句

1. Newton the first theorems what acceleration and object being an object accept agrees well with outside force f direct proportion , and the object mass becomes inverse ratio , the acceleration direction and the direction closing an outside force
   牛頓第二定律是物體的加速度跟物體所受的合外力f成正比，跟物體的質(zhì)量成反比，加速度的方向跟合外力的方向相同。
2. It's difficult to find acceleration direction in a sentence. 用acceleration direction造句挺難的