n.对置活塞
The one-piece forged brake caliper body houses two opposed pistons, with a choice of high-power metallic pads or resin pads offering finer modulation. 整体铸造的（一般是两半分别加工，再用螺丝固定合体）双活塞碟刹夹钳，有两款刹车片可以选择：大功率的金属刹片和手感较好的树脂刹片。
All the apprentices rushed to help fit the piston. 徒工们都跑过来帮助装活塞。
Get lathe No.9 set to turn the new piston. 把九号车床调好来车这个新活塞。
His plan was opposed with fierceness. 他的计划遭到强烈的反对。
The populace at large are opposed to sudden change. 人民群众普遍反对突然实行的变革。
They are opposed to the enclosure of common land. 他们反对把公地圈为私有。
