Police are puzzled about the man's death. There was no sign of a struggle and no suicide note.警方对此人的死亡困惑不解：既没有搏斗的迹象，也没有自杀前留下的遗书。There was no question of foul play - a suicide note was found near the body.不可能是谋杀—尸体旁边发现了一张自杀字条。He died without leaving a suicide note.他没留下遗言就自杀了。The suicide note precluded the possibility of murder.那封绝命书排除了他杀的可能。