expression, godan verb (-mu)
some people are never satisfied; the crane envies the longevity of the turtle
Proverb expressing that even those with long lives may envy others, illustrating human dissatisfaction. The literal image is of a crane envying a turtle's even longer lifespan.
彼は十分な給料をもらっているのに、亀の年を鶴が羨むように、もっと欲しがっている。
Even though he earns a good salary, like the crane envying the turtle's years, he always wants more.