be situated between the two

• 介于二者之间

be situated between the two的用法和样例：

例句

1. The original dull and bright region separatly is red an d green and the region between two composes according to the ratio of red to gr een.
   在输出面上得到按不同灰度赋予不同颜色的图片，使原来图像暗的地方带红色，原来图像亮的地方带绿色，介于二者之间就按红绿色比例组合。