astronomer

One day an astronomer came to the village.

A telescope is an important tool to an astronomer.

 

solar

I especially like his solar work.

These are jobs making everything from wind turbines and solar panels to the technology that you use every day.

 

Big Bang

Physics suggests equal amounts of matter and antimatter should have been made in the Big Bang.

We need such a theory to understand what happened immediately after the big bang.

 

global

We do not fight global warming because it is futile to do so.

In his model, this would have only modest effects on global welfare.

 

nitrogen

Nitrogen is one of the byproducts.

Although you think that nitrogen, I mean, it's an inert gas.

 

vapor

But instead of having the vapor pressure of the pure solute, you have another number.

Above the critical temperature and under high pressure the vapor may become as dens and as incompressible as the liquid at lower temperature.

 

presence

She darkened the festivities by her presence.

Have you ever felt the presence of the larger body of humanity in your life?

 

dissolve

Both salt and sugar dissolve easily in water.

The resistance would dissolve in places wherever we would attack.

 

reaction

The medicine produced a violent reaction.

The heat causes the reaction to be accelerated.

 

shellfish

Think about where fish and shellfish live.

The water will become so acidic it will actually dissolve the shells of living shellfish.

 

amphibian

Why does the speaker choose that amphibian as her representative of a public creature?

Until now though, researchers did not realize that amphibian larva might also produce sounds underwater.

 

reptile

No matter how dry your skin gets, you will never turn into an alligator or any other type of reptile.

On a stretch of sandy trail, he points to signs of a very rare reptile.

 

dinosaur

How would this dinosaur have moved?

From there you can look straight down to the dinosaur fossils displayed on the floor below.

 

mammal

A whale is a kind of mammal.

They satisfy the definition of mammal.

 

geologist

He is a geologist.

When I started college I really wanted to be a geologist.

 

extinct 

These animals have a distinct instinct of protecting themselves from being extinct.

Mammoths can't go extinct.

 

comet

As the comet nears the sun, its ice melts, releasing gas and dust that stream away into space.

I can hardly wait to see the new comet.

 

lessen

Your love would never lessen and never go

But I hope that these suggestions will lessen your pain when dark thoughts are all around you.

 

weightlessly

Their hands come together, fingers twining, as they float weightlessly, as if between worlds.

I cheered up immediately and floated weightlessly around in our spaceship cabin watching the earth becoming smaller and the moon larger.

 

cabin

The cabin was built of logs.

During the fire, he was trapped under the cabin and was suffocated to death.

 

get the hang of

Once you get the hang of writing poetry, there’s almost nothing you can’t do with it.

You have to have some practical experience before you get the hang of managing this kind of office work.

 

exhaust

Greed made the people exhaust their resources despite the apparent danger.

Do your best, but don't make too many promises or you may exhaust yourself.