a stoppage in a pipeline caused by gas bubbles (especially a stoppage that develops in hot weather in an internal-combustion engine when fuel in the gas line boils and forms bubbles that block the flow of gasoline to the carburetor)
An air lock sometimes happens in the water pipes of a house, especially if the water has been shut off to repair a tap, for example, and them turned on again. 气塞有时发生在住房的水管中,特别是关上水管修理水笼头,然后再拧开水管时。