buses will leave the gate every hour on the half hour during the day请把它译成汉语.我想知道是每隔半小时还是一小时
问题描述：
buses will leave the gate every hour on the half hour during the day
请把它译成汉语.
我想知道是每隔半小时还是一小时
答
是每隔一小时,例如8：30,9：30,10：30