形容詞 branchial:

1. of or relating to gills (or to parts of the body derived from embryonic gills)

bran.chi.al

adj.（形容詞）
Of, relating to, or resembling the gills of a fish, their homologous embryonic structures, or the derivatives of their homologous parts in higher animals:
鰓的，鰓狀的：屬于、有關或類似于魚鰓、其同源胚胎結構或高等動物同源結構衍生物的：
例句：
branchial muscles.
鰓部肌肉