piston是一个雅思常考词汇，这个词的常用解释为n. 活塞，这个词在很多英文原版小说中怎么应用呢，今天小编就带您了解一下。
在辛克莱·刘易斯的《阿罗史密斯》里，有这样的句子出现：
-- He thrust the syringe into the tube, he withdrew the piston dextrously with his index finger, and lectured: "Take one half c.c.
在查尔斯·狄更斯的《艰难时世》里，有这样的句子出现：
-- It had a black canal in it, and a river that ran purple with ill-smelling dye, and vast piles of building full of windows where there was a rattling and a trembling all day long, and where the piston of the steam-engine worked monotonously up and down, like the head of an elephant in a state of melancholy madness.
在儒勒·凡尔纳的《八十天环游地球》里，有这样的句子出现：
-- Then, with another whistle, he began to move forward; the train increased its speed, and soon its rapidity became frightful; a prolonged screech issued from the locomotive; the piston worked up and down twenty strokes to the second.
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