His arm throbbed dully.是什么意思？

His arm throbbed dully.

他的胳膊隐约在抽动。

his

pron. (he的所有格)他的，(he的物主代词)他的东西；det. 属于他的，用于名词前，自己的，指某人的，上帝的；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

arm

n. 臂，武器，[复数]战事，权力；vi. 准备（斗争），准备行动（against）；vt. 装备（防御工事），准备（攻击或迎击），配备，防护；

例句
He has never put an arm around his wife to accommodate photographers...
他从未为了迎合摄影师而搂住妻子。

throbbed

v. 抽痛( throb的过去式和过去分词 )，（心脏、脉搏等）跳动；

例句
The music throbbed hypnotically...
音乐咚咚作响，叫人昏昏欲睡。

dully

adv. 迟钝地，沉闷地，呆滞地，乏味地；

例句
He heard his heart thump dully but more quickly.
他听见低沉的心跳声，跳动的速度却更快了。