Sentence examples for been tried to replace from inspiring English sources

For economical and also environmental reasons, it has been tried to replace homogeneous base catalysts with heterogeneous ones [8].

"We have been trying to replace the whole system with one that has no moving parts".

The aviation agency had been trying to replace the traffic control equipment for 19 years.

The SuperSonics had been trying to replace outdated Key Arena for almost a decade, spanning two ownership groups.

Researchers have been trying to replace the gene for dystrophin for more than a decade.

Obama has been trying to replace DeMarco for several years.

"We're trying to replace what has been lost.

Across the country, manufacturers are trying to replace trans fats.

"Anderson is trying to replace that highly cyclical industry".

This is trying to replace Saturday Night Live?

Lawmakers are trying to replace billions cut from the public education budget in 2011.