It is, as the concussion specialist Robert Cantu argues, with repetitive subconcussive trauma.
NEWYORKER: Offensive Play
subconcussive:
sub- +? concussive
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。