然而，她注意到，通过卫星获取二氧化硫的准确读数是困难的。二氧化硫在贴近地面的低空区含量最为丰富，由此，卫星探测就显得困难重重。

However, she cautions that it is difficult to capture accurate readings of sulfur dioxide from the satellites due to difficulties detecting the gas low to the ground, where it is most abundant.

youdao

然而，她注意到，通过卫星获取二氧化硫的准确读数是困难的。二氧化硫在贴近地面的低空区含量最为丰富，由此，卫星探测就显得困难重重。

However, she cautions that it is difficult to capture accurate readings of sulfur dioxide from the satellites due to difficulties detecting the gas low to the ground, where it is most abundant.

youdao