mantelshelf的复数形式怎么拼写？

Beneath this, on the mantelshelf, is displayed a collec-tion of seventeenth-century tulip vases.下面的壁炉架上陈列的是一批17世纪的郁金香花瓶。...

mantelshelf的音标：mantelshelf的英式发音音标为：['mæntlʃelf]mantelshelf的美式发音音标为：['mæntlˌʃɛlf]...

n.壁炉架...