noun [集合/集体]十三；十三岁；十三个He ran away from home at the age of thirteen.他十三岁时离家出走
numeral [基数词]十三Thirteen is often considered an unlucky number.十三常被认为是不吉利的数字。
adjective [原级]十三的；十三个的During the expedition, they trekked ten to thirteen hours a day.在探险期间，他们每天都要走十到十三个小时。