In case of emergency that can cause a fire, oil from the transformer goes to a separate green pipe shown in picture 11 and the transformer is filled with nitrogen.
为防止突发事件造成的火灾，变压器中的油将流入如图片11所示的一个单独的绿管，变压器内会充满氮气。
Safe in his enclosing study, with the lovingly filled and refilled pipe and the esoteric books, his fame would have centred round investigations of vagabonds in medieval Europe.
他本可以安然处身于浓烈的学习氛围中，兴趣盎然且不停地吸着自己可爱的烟斗，终日与深奥的书本为伴，而他也能因专注于对中世纪欧洲游民的研究而享誉美名。
The workmen dug a hole, mended the pipe, and then filled the hole in again.
工人们挖了个洞，修补好管道，然后又把洞填平。
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