contraextension

例句：

1. 1. The company's decision to counteract the negative effects of global warming is a wise one.
   该公司决定抵消全球变暖的负面影响是明智的。
2. 2.The scientist used a contraextension technique to study the behavior of the molecules.
   科学家使用一种反扩张技术来研究分子的行为。
3. 3.The artist's use of color in his paintings has a contraextension effect that draws the viewer into the scene.
   艺术家在画中使用颜色产生了一种反扩张效果，吸引观众进入场景。