4000 Essential English Words 2e 5 (2nd Edition) 영영 Unit 25

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aircraft

n. a vehicle that flies in the sky, such as an airplane or helicopter
At the museum in the airport, you can see a lot of old aircraft.

species

n. a type of plant or animal
There are 21 different species of butterfly in this forest.

zoology

n. a subject in which people study animals
Helen wants to study zoology because she has always liked animals.

jealousy

n. a feeling of wanting something that somebody else has
She felt a lot of jealousy when she saw her friend with a new car.

institute

n. an organization that is interested in research or teaching
I am going to a lecture about Ancient Rome at the Historical Institute.

rural

adj. in the countryside instead of the city
I want to live in a small house in a rural area.

secluded

adj. far away from any other place
There was a secluded bench in the park.

traverse

v. to move or travel through an area
The explorer traversed the desert alone on a camel.

ethical

adj. it is the right thing to do
Many people believe that it is ethical to help others in need.

migrate

v. to move from one place to another
Many birds migrate to warmer countries in the winter.

swamp

n. a very wet area of land
There are lots of wild animals living in the swamp.

hardy

adj. strong and can live through difficult conditions
The farmer is a hardy man and doesn’t mind working outside.

principle

n. a belief about the correct way to behave
To maintain principles, it’s vital to watch, listen, and speak carefully.

decisive

adj. making decisions quickly
Our boss is very decisive, so it did not take long to organize the project.

esteemed

adj. liked or respected by many people
An esteemed scientist is coming to the university to talk about his discoveries.

nurture

v. to care for something as it grows or develops
Robert nurtured his plants, and that is why they grow so well.

concrete

n. a substance made from stones
The man covered the ground with concrete.

overhead

adv. located above you
As we sat on the top of the hill, a plane flew overhead.

celebrity

n. someone who is famous
It was the highlight of the evening when the celebrities arrived.

extinct

adj. none left
There used to be dinosaurs all over the world, but now they are extinct.