Adolescence /ˌæd

maturity /məˈtjʊə.rɪ.ti/ /-ˈtʊr.ə.t ̬i/ noun [ U ] FULL GROWTH
3. the state of being completely grown physically
How long does it take for the chicks to grow to maturity?
memory /ˈmem. ə r.i/ /-ɚ-/ noun ABILITY TO REMEMBER
1. [ C or U ] the ability to remember information, experiences and people
a good/bad memory
After the accident he suffered from loss of memory/memory loss .
She has an excellent memory for names (= She can remember names easily) .
memory /ˈmem. ə r.i/ /-ɚ-/ noun EVENT REMEMBERED
2. [ C ] something that you remember from the past
I have vivid memories of that evening.
That tune really brings back memories (= makes me remember past events) .
School is just a dim/distant memory for me now (= something I cannot remember very well) .
milestone /ˈmaɪl.stəʊn/ /-stoʊn/ noun [ C ] ( UK also milepost ) STONE/POST
1. a stone or post at the side of the road on which is printed the distance to various places, especially to the nearest large town
mind /maɪnd/ noun [ C ]
1. the part of a person that makes it possible for a person to think, feel emotions and understand things
Her mind was full of what had happened the night before, and she just wasn't concentrating.
Of course I'm telling the truth - you've got such a suspicious mind!
I just said the first thing that came into my mind.
I'm not quite clear in my mind about what I'm doing.
2. a very clever person
She was one of the most brilliant minds of the last century.
3. all in the/ your mind
describes a problem that does not exist and is only imagined
His doctor tried to convince him that he wasn't really ill and that it was all in the mind.
4. bear/keep sth in mind
to remember a piece of information when you are making a decision or thinking about a matter
Bearing in mind how young she is, I thought she did really well.
Of course, repair work is expensive and you have to keep that in mind.
5. go over sth in your mind ( also turn sth over in your mind )
to think repeatedly about an event that has happened
She would go over the accident again and again in her mind, wishing that she could somehow have prevented it.