I love the ambience here
(나는 이곳의 분위기가 마음에 든다.)
This is implying that a person loves the atmosphere and loves the good vibe they feel of the place.

Puberty(사춘기) 
The age of when a person is first capable of sexual reproduction of offspring.  This usually happens at the age of 12 for females and the age of 14 in males.

Adolescence(청년기)
This is a transitional period between puberty and adulthood in human development.  This is when a person is in the state of growing to maturity.
The difference between puberty and adolescence is the development and process of growing to maturity.  Puberty involves all the physical changes that need to take place in your body to change your childlike body into an adult one.  Adolescence involves all the changes that need to take place.  Puberty and adolescence happens almost simultaneously and is needed for a person to grow maturely into adulthood.

Push the limits to see how far (you/she/he/I) can go.
(버틸 때까지 버텨 본다)
This phrase is said when a person exceeds their normal limits to reach their goal.  For example, an athlete will push themselves to be the best in order to be more athletic and more successful than their competitors.  They would push themselves more than they thought they can handle in order to succeed.

Repulsive, act out
(반발하다)
The word repulsive means to avert away.  The word repulsive can also be described as something to be made repulsive so another person would not dare go to it.  Act out, or acting out is a phrase used when a person is causing a scene.  For example, a child can act out when they don’t get something they wanted by screaming and kicking.

Unruly, disobedient-
(말을 잘 안 듣는)
Unruly is a term used when a person is not submissive or conforming to rule.  An unruly class of people will mean that the group of people is ungovernable because they will not submit to the rules.  Disobedient is when you are neglecting or refusing to obey.  For example, a disobedient child will be punished for not obeying their parent’s rules.