| 单词 | donkey boiler |
| 例句 | For supplying steam to the engines there are two return-tube boilers, each having three furnaces, and there is also a donkey boiler, which is used in harbor for working the four steam winches on deck. Scientific American Supplement, No. 799, April 25, 1891 Fortunately, although there was no steam in the main boilers, the small donkey boiler was full, and the pumps were put to work. Round the World |
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