“对边”的拼音？

这是平行四边形的对边.These are the opposite sides of the parallelogram.环面可由矩形把其两对对边分别重叠起来而得到.A torus can be obtained from a rectangle by identifying opposite sides.当各块板块彼此分离时, 他们又在对边与其它板块发生碰撞.As the plates move apart, they encount...

“对边”的英语可以翻译为：across flats，opposite side，subtense ...