gas vent

例句：

1. 1. The gas vent is located at thetop of the building.
   气体排放口位于建筑物顶部。
2. 2. The engineer carefully inspected thegas vent to ensure it was functioningproperly.
   工程师仔细检查了气体排放口，确保其正常工作。
3. 3. The gas vent wasblocked by a piece of debris, causinga small explosion.
   气体排放口被一块碎片堵塞，引发了小规模的爆炸。