人の体は三十前に成熟する。の英語

Men get their growth before they are thirty.

It takes about three years to become mature.

It's not ripe.

the age of thirty

A monkey is mature at a few years old.

one's degree of maturity

In human years, they would be in their mid-60’s.

an age at which a person is considered an adult

an older person

a person who looks grownup for his age

coming‐of‐age

It would be 136 years old in human years.

the age at which a person becomes senile

Kinako is about 50 in human years.

We Japanese come of age at twenty.

old age

a person who is middle aged

a person who is underage

a person of nearly the same age as another

People in their sixties and over have seen three reigns.

In Japan people come of age when they are 20 years old.

someone whose age is in the sixties

No man is so old he cannot learn.

reach a certain age that marks a transition to maturity

Every person will be admitted regardless of his or her age.

Every person will be admitted regardless of his or her age.

the state or quality of looking young

a state of being older

The ages of all of them are different.

He is well advanced in life.