The team used a method known as the " parallax effect" to measure the volcano's plume.

研究小组使用了一种被称为“视差效应”的方法来测量火山的烟柱。

The scientists said they used the parallax effect to examine the images captured from above by satellites.

科学家们说，他们利用视差效应检查了卫星从高空拍摄的图像。

The parallax effect describes a difference in the apparent position of an object when it is seen along two different lines of sight.

视差效应描述了当物体沿着两条不同的视线观察时，物体的表观位置的不同。