piston
US /ˈpɪs.tən/
UK /ˈpɪs.tən/
名词
活塞
a disk or short cylinder fitting closely within a tube in which it moves up and down, as in a steam engine or internal combustion engine, to convert pressure into linear motion or vice versa
示例:
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The engine's pistons move rapidly up and down, driving the crankshaft.
发动机的活塞快速上下移动，驱动曲轴。
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A faulty piston can cause significant damage to an engine.
有故障的活塞可能对发动机造成严重损坏。