He has on top of his head a helmet made of bronze, perhaps weighing about five pounds, these are approximate; they would have differed from person to person to some degree.

他的头部有铜质头盔,头盔大概重五磅,这只是大概的重量,实际重量因人而异

耶鲁公开课 - 古希腊历史简介课程节选