B cell lymphomas are more common and the neoplastic B cells usually express CD20 on their surface.

B细胞淋巴瘤较为常见，肿瘤细胞表面通常表达CD20。

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。

A second type of B cell lymphoma is a follicular lymphoma, and it's an indolent lymphoma.

第二类B细胞淋巴瘤是滤泡性淋巴瘤，是一种惰性淋巴瘤。

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。

A fifth type of B cell lymphoma is marginal zone lymphoma, and it's an indolent lymphoma.

第五类B细胞淋巴瘤是边缘区淋巴瘤，是一种惰性淋巴瘤。

A sixth type of B cell lymphoma is lymphoplasmacytic lymphoma, and this one's also an indolent lymphoma.

第六类B细胞淋巴瘤：淋巴浆细胞性淋巴瘤，也是一种惰性淋巴瘤。

And there are various types of B cell lymphomas and an important feature is how quickly each one grows - they can be indolent or slow to grow, aggressive, or highly aggressive.

有各种类型的B细胞淋巴瘤，一个重要的特征是它们的生长速度各异：他们可以是惰性的或生长缓慢的、有侵袭性的、或高度侵袭性的。