1. 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。

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