n.企鹅
There was this running gag about a penguin ( = they kept telling penguin jokes ).
人们不断讲关于一只企鹅的笑话.
He walked with an awkward gait like a penguin.
他走路的步子难看得就像企鹅.
The penguin is a flightless bird.
企鹅是一种不会飞的鸟.