Lymph- refers to lymphocytes and oma- refers to a tumor.

lymph-指的是淋巴细胞，oma-指的是肿瘤。

The first, are teratomas, terato means monster and oma is a tumor.

第一种是畸胎瘤，terat-的意思是怪物，-oma是肿瘤。