第三人称单数： hoarsens
过去式： hoarsened
过去分词： hoarsened
现在分词： hoarsening

Returning home , yu rang cut off his eyebrows and beard , and swallowed burning charcoal to hoarsen his throat , in order to escape recognition both in appearance and voice .

豫让回去后，剃去眉毛和胡子，又吞食热炭，把声音弄嘶哑，以便从形象到声音都不让人认出来。