求翻译：高空进行动火作业，其下部地面如有可燃物、空洞、阴井、地沟、水封等，应检查分析，并采取措施，以防止火花飞溅引起火灾爆炸事故。是什么意思？

Altitude of hot work , the lower floor if combustible , empty , catch basins , trench , seal , etc., should check analysis , and to take measures to prevent fire and explosion caused by sparks flying .

falling in the fire, the lower floor as a combustible, hollow, genital mutilation wells, trench, water seal, and so on, should review the analysis, and to take measures to prevent sparks fire explosion.

The upper air carries on gets angry the work, its lower part ground like has the combustible substance, the cavity, the indoor well, the ditch, the hydraulic packing and so on, should inspect the analysis, and takes the measure, prevented the spark splash causes the fire explosion accident.

High altitude hot work, its lower ground, such as combustible, empty, Yin Jing, waste, water and so on, should be examined and to take measures to prevent fire and explosion accident caused by sparks.

正在翻译，请等待...