existing

However, the quantum properties of the fuel would be adjusted for peak efficiency using an existing process known as spin polarization.

"This approach to learning contributes to what we call 'cumulative culture' -- the ability to build on existing knowledge and pass it down through generations," Hewlett said.

Since at least the early 20th century, the rhetoric behind the afforestation push in Israel/Palestine has implied that no existing human settlements or agriculture his been displaced or disrupted.

The government argues existing inheritance tax isn’t fair or sustainable – as everyone else sufficiently well off to pay it is charged 40% and farmers are charged nothing.

What is special about Platynereis dumerilii is that, unlike other species, regeneration in marine worms does not rely on existing stem cells.