Primary mediastinal malignant germ cell tumors are rare and different from gonadal germ cell tumors in clinical characteristics,diagnosis,therapy,and prognosis.是什么意思_Primary mediastinal malignant germ cell tumors are rare and different from gonadal germ cell tumors in clinical characteristics,diagnosis,therapy,and prognosis.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句