Black models are becoming more acceptable as they become more visible, she said.

And the country's post-1990s economic model has become more varied internally, partly from greater exposure to outside practices.

In its ramifications, the tiny model of Metropolis has become huge.

There are several instruments that retain older forms even while newer models have become widespread elsewhere in Europe.

Programs developed there became a model for the new field of social work.

The climate experts on the panel believe their models have become increasingly reliable.

These models are becoming increasingly rare and value is estimated in the $650-$800 range depending on condition.

The more states and contexts included, the richer the model becomes.

The model became transparent, then turned into a cutaway; now they could see the assembly line, the physical plant.

Some newer models are becoming more powerful, but at the expense of fuel efficiency.