The phrase "a very solid base" is correct and usable in written English.
It can be used when discussing a strong foundation or starting point for an idea, project, or argument.
Example: "The research provided a very solid base for our conclusions about climate change."
Alternatives: "a strong foundation" or "a robust basis".
Since these voters still make up about forty per cent of the over-all electorate, they gave Trump a very solid base.
"Though we are facing a lot of challenges," Mr. Mansouri said, "we cannot build a very solid base for small and medium enterprises unless we take very important positions on federal and legal levels".
The difference in quality between the Windows 7.1 bits and the Metro-style bits tells something about the engineering – namely, that Windows 7 is a very solid base that's required some relatively minor changes, and that most of the engineering effort has gone into building the infrastructure to support Metro-style apps.
"We've been getting great traction and have built a very solid base and good base number of merchants," he added.
"I've repeatedly come out and said there's no threat of administration and we've built a very solid base now which we're moving forward from.
Natalie Bennett spoke of "steady growth... from a very solid base" for the party", and predicted gains in London, Liverpool, Oxford and Bristol in the English local elections on 22 May.
LA is big but I think if they do it's going to be successful, it's going to help our kids develop their technical skills much quicker and give them a very, very solid base so that when they turn 11 years old they will be able to perform in the outdoor game".
"Our four-plus years of working with DirecTV... creates a very, very solid base from which we can move forward," Ramsey said.
First, President Xi Jinping, who took office a year ago, operates from a very solid power base, with unquestioned command over the party, the state and the Chinese military.
