two plane theory

例句：

1. 1. This theory suggests that the relationship betweentwo variables is linear.
   这个理论表明两个变量之间的关系是线性的。
2. 2. The two-dimensional model of thebrain has been a subject ofmuch debate.
   大脑的二维模型一直是争论的焦点。
3. 3. The two-plane theory oflight waves explains how they travel through space.
   光波的双平面理论解释了它们如何穿越空间。