CMOEP in the Treatment of Untreated Peripheral T-cell Lymphoma

Drug: Mitoxantrone hydrochloride liposome Mitoxantrone hydrochloride liposome (18 mg/m\^2) on day 1, every 3 weeks; Drug: Cyclophosphamide Cyclophosphamide(750 mg/m\^2) on day 1,every 3 weeks; Drug: Vincristine Vincristine (1.4mg/ m2，Max dose 2mg) will be administered by an intravenous injection on day 1(Or at the discretion of the investigator, use other vinblastine drugs with the same mechanism, such as vindesine 3 mg/m2, the maximum dose of 4mg),every 3 weeks; Drug: Etoposide Etoposide (60 mg/ m2) will be administered by an intravenous infusion on day 1-3,every 3 weeks;