英语语法分析

We read a letter about the medulla spinalis of some quadrupeds.

我们读了一封关于一些四足动物的髓质脊髓的信。

To properly capture the motion of hulking quadrupeds, ILM studied the movement of elephants.

为了恰当捕捉庞大四足物体的运动，工业光魔研究了大象的步态。

" some quadrupeds are not houses " becomes, by contraposition, " some thing not house are quadrupeds.

“某些四足动物不是马” ，以反言论法，变成了“某些不是马的东西是四足动物” 。