책 Four Corners 4 - 7단원 D

at a time in the past, often used to introduce a fairy tale or fictional story

appearing mechanical or lacking emotion

로봇 같은, 기계적인

a chair with wheels that is designed particularly for the use of disabled persons

휠체어, 바퀴 달린 의자

a state of being free from pain, worry, or other unpleasant feelings

편안함, 위안

very necessary for a particular purpose or situation

필수의, 중요한

books, movies, etc. about imaginary things based on science

과학 소설

to have actual presence or reality, even if no one is thinking about it or noticing it

존재하다, 있다

the latest or most advanced level of technology, design, or knowledge in a particular field

an old person, especially someone who is retired

노인, 시니어 시민

to guess the value, number, quantity, size, etc. of something without exact calculation

추정하다, 견적하다

to become less in amount, size, or degree

줄어들다, 감소하다

all the individuals who work in a particular company, industry, country, etc.

노동력, 직원

a lack of something needed, such as supplies, resources, or people

부족, 결핍

a period of time in which someone no longer works due to old age

황금기, 퇴직 후의 삶

a failure in the progress or effectiveness of a relationship or system

붕괴, 실패

an order, particularly given by someone in a position of authority

명령, 지시

a way of communicating emotions or attitudes through movements and positions of the face, such as smiling, frowning, or raising eyebrows

얼굴 표정, 안면 표정

showing signs of future success or potential

유망한, 유망한