煤气管道已被关闭,以防漏气.The gas pipe has been blocked off to prevent escapes.这会造成漏气，破坏罐子的密封性。This would permit air to enter, breaking the hermetic seal of the jar.如果煤气管漏气, 你必须关闭送气管, 因为那很危险.If the gas blows back , you must turn off...
" Well, I could, p'raps ,'said Archie ungraciously and stumped off toward the cellar stairs." 好吧, 我看可以, "阿尔奇有点粗声粗平地说,接着便笨拙地向地下室走去了.His cellar caved.他的地窖塌陷了。When Tom's companions drank to the Hans en Kelder...