All major groups of vertebrates have rods in the retina as well as cones.

所有主要脊椎动物类群的视网膜中，都同时含有杆细胞与锥细胞。

youdao

They did not have rods.

FORBES: Magazine Article

Families and sporting companies have sent rods and golf clubs, which are passed down from one unit to the next.

NPR: U.S. Troops in Baghdad Make Fishing a Tradition

American pacemaker suppliers have become lightning rods for criticism in Japan for charging prices roughly double those back home.

FORBES: Opiate of the masses