An airship is lighter than air.

Calling a name that's lighter than air?

The air of Sydney is cleaner than that of Tokyo.

The air of Sydney is cleaner than that of Tokyo.

That's great, but it's the air.

The air of hills is cooler than that of plains.

When warm, light, air crosses mountains it rises into the upper atmosphere and does not fall back to the ground. In this, and other, ways wind changes with the terrain.

Water transmits sound better than air.

Well feel free to bring these any time.

Take it easy!

So not everything falls down, but you can easily extend your theory to say well a balloon is larger than air.

The substance in these talks this week is off the charts. It's great.

No, feel free.

I fancy that's only because he don't rattle away, like other young men do.

Air.

There's no damned air here at all.

This place has become crowded and the air thick.

Paper money not so pretty, but it has other advantages.

Your condition isn't serious.

And then the charges of treason were dropped.

The sky promises fair weather.

Judging from how the sky looks, we'll be having fine weather.

Judging from how the sky looks, we're going to be in for some good weather.

It looks like it'll be clearing up.

The sky gives promise of fine weather.

Really?

The air in here's getting a bit stale.

And one of the results of this is that our latest prototype weighs less on your nose than many sunglasses.

We are air.

Knowledge today is a commodity.

Earth, water, air, and fire.

I trust there will be no further interruptions.

So it uses some plants to do this job, selected for their gas filtering ability.

Do not do so lightly.

Please make yourself at home.

I like air.

We see and feel the climate changes, the droughts and the flooding, the storms and the heat.

So if you don't know one of these languages, it's instant learning.

When the ballons are laid out, they're totally flat.

But what's the catch?

It's invigorating to breathe the brisk, fresh mountain air.

And, in a moment, we're going to see a view of the airflow.

I should add that the mean over here is the heavier of the two numbers.

The air of hills is cooler than that of plains.

I know what you mean.