pushchair的复数形式怎么写？

Who can fold up a pushchair, toddler and shopping and then get them all onto the bus?谁有那本事一手收起婴儿推车，一手抱着刚会走路的孩子，还得提着刚买的东西，然后挤上公共汽车？...

pushchair的音标：pushchair的英式发音音标为：['pʊʃtʃeə(r)]pushchair的美式发音音标为：['pʊʃtʃer]...

n.折叠式婴儿车...