4周搞定2000+托福核心词
一推一拉气体膨胀→风箱
bellows
常考释义
The use of powerful, steam-driven bellows in blast furnaces helped iron makers switch over rapidly from limited charcoal to unlimited coke (which is made from coal) in the smelting of pig iron (the process of refining impure iron) after 1770.
1770年之后，因为高炉中使用动力十足、蒸汽驱动的风箱，铁制造商们在铸造生铁（提炼铁的过程）时，很快不再使用数量有限的木炭，转而使用无限的焦炭（由煤制作而成）。
来源于：阅读OFFICIAL34 P2n. 风箱
You could, I suppose, compare me to a blacksmith's bellows.
我想, 你可能把我比作铁匠的风箱。
And it was called a bellows of fresh air.
这如同一个有着新鲜空气的风箱。
来自《1600年后西方社会的流行病第11集》
图片源自网络
The use of powerful, steam-driven bellows in blast furnaces helped iron makers switch over rapidly from limited charcoal to unlimited coke (which is made from coal) in the smelting of pig iron (the process of refining impure iron) after 1770.
1770年之后，因为高炉中使用动力十足、蒸汽驱动的风箱，铁制造商们在铸造生铁（提炼铁的过程）时，很快不再使用数量有限的木炭，转而使用无限的焦炭（由煤制作而成）。
来源于：阅读OFFICIAL34 P2Iron manufacturers, which had starved for fuel while depending on charcoal, also benefited from ever-increasing supplies of coal: blast furnaces with steam-powered bellows turned out more iron and steel for the new machinery.
依赖于木炭供应的铁们急需燃料，他匠们也受益于越来越多的煤炭供应。蒸汽提供动力的鼓风炉为新机器留了更多的钢和铁。
来源于：阅读OFFICIAL6 P1n. 伸缩管；波纹管【工】
n. （照相机的）皮腔，折箱【摄】
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