cylinders ['sɪlɪndəz]

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附加级

n.圆筒( cylinder的名词复数 )；圆柱；汽缸；（尤指用作容器的）圆筒状物

They are working on all cylinders to get the job finished. 他们正在竭尽全力争取把这工作干完。来自《简明英汉词典》
That jeep has four cylinders. 那辆吉普车有4个汽缸。来自《简明英汉词典》