Objects that move radially, i.e., directly toward or away from a viewer, produce a stimulus on the eye that is continuously increasing or decreasing in size.

Our visual systems evolved in an environment that contained (mostly) rigid moving objects.

Laws cannot be constant.

Throughout China s recent rise from poverty to relative prosperity and global economic power, the fundamentals of its statecraft and strategic doctrine have remained largely unchanged.

These pegged rates were not immutable.

Local costs doubled while the prices received for exports remained unchanged, since each 1 of exports translated into approximately 1 Real of local earnings.

We kept in touch.

Usually, they did not stay long.

Do we know of any cultures that have remained unchanged through time?

Calls to his relatives remained unanswered.

I don't want you to stay.

The eight provinces' boundaries remained unchanged for about 480 years from 1413 to 1895, and formed a geographic paradigm that is still reflected today in the Korean Peninsula's administrative divisions, dialects, and regional distinctions.

Since 1954, provincial boundaries in both the North and South have remained unchanged.

First, it is important that expectations be kept modest.

Lincoln's parents remained poor all their lives.

They stayed married for the sake of their children.

I told them to stay here.

Tom's parents only stayed together for the sake of the children.

They will buy the new government debt and leave all spending decisions unaltered.

It was down to just the two of us, and we were about to go under.

They stayed with me in the room all night.

They stayed in the room with me for the whole night.

I want everyone to stay where you are.

82 per cent of the customs tariffs will remain unchanged in Russia, 75 per cent of the tariffs stay the same in Belarus, and only 45 per cent will be kept unamended in Kazakhstan.

The residual demand curve is the market demand that is not met by other firms in the industry at a given price.

I told you to stay in your room.

I told them to stay in their room.

Precise mechanisms of reproductive heritability and the origin of new traits remained a mystery.

There was only a small garrison and small number of prisoners.

So we're not empty vessels the mental models that we have as children persist into adulthood.

The right does not remain static and it does not reject the idea of state intervention.

The Fed pays the banks 0.25 to keep them idle.

Some people shredded the whole sheet of paper.

Six million people are left without power for 9 hours.

Japan s hidebound postwar regime has been insulated, externally and internally, by relatively unchanging geostrategic and economic conditions. The country remains the world s largest creditor, and has slowly but steadily eliminated enormous non performing loans in its banking sector.

Japan s hidebound postwar regime has been insulated, externally and internally, by relatively unchanging geostrategic and economic conditions.

The events in Rio de Janeiro feel constant and inescapable, a furious relay of competition and striving.

Hence, real long term rates remained quite high in the mid 1980 s.

The Portuguese arrived not long after, and stayed 400 years.

The causes of World War I have long baffled the public and historians.

Key interest rates have remained close to zero for six years now.

American troops stayed in Nicaragua until 1933.

Tom and Mary stayed married even though they didn't like each other.

What we found is that these rooms remained relatively stagnant until Saturday, when we opened the vents up again.

Long term memory, on the other hand, is maintained by more stable and permanent changes in neural connections widely spread throughout the brain.