Supervisor: Are there any obstacles, such as high voltage lines, telephone lines and viaducts?

监督：空中是否有障碍，如高压线、电话线、高架桥等？

youdao

Supervisor: Are there any obstacles, such as high voltage lines, telephone lines and viaducts?

监督：空中是否有障碍，如高压线、电话线、高架桥等？

youdao