The 700-series was then gradually replaced, beginning in 1990, by the 900 series.

Those who drop off and move on are gradually replaced.

"I will gradually replace them all by older women and men," she said.

It was gradually replaced by the third generation 230, beginning in 1963.

However, they gradually replaced all local justices of the peace.

After 1900, the garden was gradually replaced by new schools and campuses.

This approach runs the risk of creating a system based on private insurance which would gradually replace social security.

The new glasses are planned to gradually replace the old ones.

Through all of their work, they had gradually replaced each instrument take until nothing remained from the original performance.

The anger on his face was gradually replaced with shame.