El libro Four Corners 4 - Unidad 7 Lección D

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

érase una vez

appearing mechanical or lacking emotion

robótico

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

silla de ruedas

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

comodidad

very important or necessary for a particular purpose or situation

esencial

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

ciencia ficción

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

existir

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

lo último

an old person, especially someone who is retired

persona mayor

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

estimar

to become less in amount, size, or degree

disminuir

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

mano de obra

a state where there is not enough of something or someone

escasez

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

periodo de jubilación

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

avería

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

orden

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

expresión facial

showing signs of future success or potential

prometedor