contraflow的复数形式怎么拼写

A contraflow system is in operation on this section of the motorway.这段高速公路的一侧正在实行双向行驶。...

contraflow的音标：contraflow的英式发音音标为：['kɒntrəfləʊ]contraflow的美式发音音标为：['kɑntrəfloʊ]...

n.反向车流...