1. What is the area of this parallelogram? 这个平行四边形的面积是多少？
2. You see, it does look like a parallelogram. 你看，它的确看起来像一个平行四边形。
3. The parallelogram still has the same area, and it's still on the same plane. 这个平行四边形仍然有相同的面积，它仍然在同一个平面上。
4. I mean it might be slightly curvy, but roughly, it looks like a parallelogram in space. 我的意思是它可能有点弯曲，但大致上，它看起来像空间中的平行四边形。
5. Here is a better picture. I claim that what will be going through C is this shaded parallelogram to the left of C. 这里有幅更好的图。我说经过 C 的是 C 左边的这个阴影平行四边形。
