“每小时”的英语？

到第三圈时，金基德的车速达到了每小时289英里。By the third lap Kinkead had touched 289 m.p.h.车速达到每小时240英里时，里程表上的指针显示超出了最高时速。At 240 mph the needle went off the clock.在建筑密集区域，车速限制为每小时30英里。A speed limit of 30 mph was introduced in built-up areas...

“每小时”的拼音为：měi xiǎo shí...