A third type of B cell lymphoma is Burkitt lymphoma, and it's a highly aggressive lymphoma.

第三类B细胞淋巴瘤：伯基特淋巴瘤，是一种高度侵袭性淋巴瘤。

A fourth type of B cell lymphoma is mantle cell lymphoma, and this one's an aggressive lymphoma.

第四类B细胞淋巴瘤是套细胞淋巴瘤，这是一种侵袭性淋巴瘤。

The first type of B cell lymphoma is a diffuse large B cell lymphoma, this type is the most common and it's an aggressive lymphoma.

第一类B细胞淋巴瘤：弥漫性大B细胞淋巴瘤，这种类型最常见，是一种侵袭性淋巴瘤。