那位喜剧演员以粗俗的幽默著称，他昨晚的下流段子让观众既尴尬又发笑。

The comedian is known for his vulgar humor, and his scurrilous jokes last night left the audience both embarrassed and laughing.

scurrilous 这个形容词来自拉丁语 scurra（小丑、爱说笑的人），后缀 -ous 表示"具有...特性的"。原指小丑式的粗俗幽默，现特指"下流粗鄙的、充满低级趣味的"，常用来形容低俗的笑话或言论。